LG C800
Device will not enter fastboot.
Can't get into recovery mode.
Each time it boots it hard resets. There is an unofficial CWM Recovery Rom on this forum from chui101 which is for this exact phone, but I have as of yet not had any luck in getting the phone to take it.
So far i've tried Flash_image recovery.img (renamed chui's CWM recovery file to recovery.img)
Doesn't seem to matter what I do the phone starts(LG on screen), resets (the LG goes away for a sec then comes back), does a hard reset (a white box with an arrow pointing out of it an to a little android), again resets the phone one last time for a "normal" boot.
I've tried a few different things to try and flash anything overtop of the stock recovery but nothing works. It seems like very early in the bootstrap is a command to do a hard reset and anything that gets put in AFTER that command is ignored. (And the phone hard resets and anything else it was supposed to do is gone.)
Device is rooted with SuperSU.
Phone is fully functional except that it hard resets every boot, and if its plugged in when off it doesn't go to a charging screen, it starts the phone 100% up.
Adb devices CAN see the phone.
I CAN get into Download (sometimes called Emergency) mode.
"reboot recovery" doesn't do anything but reboot the phone as described above.
I can't afford a new phone guys, so I'm over a barrel at this point.
i'll pay whoever provides meaningful help in getting this thing fixed.
You should start fresh. So, flash the stock rom FTF of your phone, then the phone should boot up normally. Then you could either root it and install a CUSTOM recovery, or flash a pre-rooted custom kernel that already contains a recovery. From there, just flash the custom rom you want
Just press thanks if I helped, no need for money
stock rom FTF?
From the factory?
I'd love to do that. But am bewildered as to how when every guide I've found says use fastboot -- which doesn't work on my device. And every guide without fastboot thus far has not worked. I've been reading 10 hrs a day for the last 3 days looking for a solution to this.
If there was a way to completely wipe the entire phone and then install stock rom I'd be glad to do it.... I have found no such guide... only those to replace recovery. (not a 100% clearing as if it came right off the line with no software yet installed)
Additional information:
mv /system/recovery-from-boot.p /system/recovery-from-boot.p-bak
Spits out a "No such file or directory" error
I don't know about you, but for Xperia Devices there is a PC software called Flashtool to flash stock roms and custom kernels and stuff from the PC. There should also be a software like that for your device. You just download the stock FTF for your phone (just type in google "download stock FTF for LG C800") and flash it in Flashmode that should be working
One more thing, this issue is not called bricked
press thanks if i helped
There is an LG tool but it says current software is up to date.
Other option is run recovery, which just reboots the phone as is.
No, this software I am talking about is not made by LG or Sony in my case. It should be a general tool for all LG devices. it should root, flash, install busybox, etc......
blakstar said:
No, this software I am talking about is not made by LG or Sony in my case. It should be a general tool for all LG devices. it should root, flash, install busybox, etc......
Click to expand...
Click to collapse
LG MOBILE SUPPORT TOOL ?
Thats the one that so far doesn't work.
the one named:
KDZ_FW_UPD_EN ?
He doesn't appear to support GSM phones. Plus I hit "Read info from phone" button... it gets almost everything -- correctly -- then crashes.
IT wants kdz files... looking for them now... chui has a dl link for the stock recovery but even though its a few mb it looks like only a zipped folder hierarchy with no files.
Slightly mis-read. still not finding any "generic" flashing software
trying octopus now....
crashed....
run as admin..... ah... you need their hardware which is hundreds of dollars...
Flash image gui, phone is not supported.
ok, a couple cyanogen dev's have both told me i'm screwed. Imma try for the rest of today and then just never turn it off again.
ok, paying lg to fix it... anybody guess what that will cost?
Try flashing CyanogenMod on your phone as no stock firmware is avaiable currently for your phone cyanogenmod shall fix the problem and you should boot normally (first flash CWM)
http://forum.xda-developers.com/showthread.php?t=1752704 - flashing cwm recovery (do it!)
Flashing cyanogenmod (requires usb debugging on)
First to put the cyanogenmod rom in the sdcard use adb push - http://forum.xda-developers.com/showthread.php?t=1667929
Page 1 (Pre Requisites - http://droidnoob.com/update-lg-c800-to-android-4-0-4-ics-via-cm9.html
Page 2(The actual flashing part :victory - http://droidnoob.com/update-lg-c800-to-android-4-0-4-ics-via-cm9.html/2
Probably will fix the problem....
hi techmasta,
I'd love to flash cyanogenmod, but the phone never enters fastboot to flash anything. The first link you posted says to use fastboot. I can't do that. The phone doesn't goto fastboot, it runs its recovery first.
EDIT: if there is a way to force it while the phone is in download mode that could probably work.
secondly, I've spend more than 40 hours on this issue, mostly reading forums but still a great deal on google.
I'm pretty unhappy with google as neither of those droidnoob forums ever come up. And believe me, there isn't much out there referring to the lg c800 so they should have!
So here is the deal, i went to flash a new ROM last night. I usually do everything on my phone as my computer does not normally recognize my USB for some reason, but anyways, i tried flashing last night and the flash failed. and i have no back ups nor can i plug in a USB and transfer anything to my "sd" portion of my phone because it does not work. Oh and when i go back to stock (Factory reset), when i try to boot into system. It just shoves me back into recovery mode, someone please help. I'm usually pretty good with this stuff and if i don't know a quick Google search is sufficient. But i have found nothing. This is my last resort.
FYI: I believe it failed because my recovery is an old version, I'm using team win recovery touch. not sure if that changes anything
Dylerium said:
So here is the deal, i went to flash a new ROM last night. I usually do everything on my phone as my computer does not normally recognize my USB for some reason, but anyways, i tried flashing last night and the flash failed. and i have no back ups nor can i plug in a USB and transfer anything to my "sd" portion of my phone because it does not work. Oh and when i go back to stock (Factory reset), when i try to boot into system. It just shoves me back into recovery mode, someone please help. I'm usually pretty good with this stuff and if i don't know a quick Google search is sufficient. But i have found nothing. This is my last resort.
FYI: I believe it failed because my recovery is an old version, I'm using team win recovery touch. not sure if that changes anything
Click to expand...
Click to collapse
Well u need to get something on the phone to flash. I suggest you work on the usb issue or get a micro sd reader.
Well the "sd" card is the integrated one i cant remove. And i have tried fixing the usb but nothings seems to remedy it. Very rarely i can get it to work but it will stop working the next time i try to plug it in. I have a ROM i can flash, but the recovery fails to flash it every single time, even after clean install. im fairly sure its my recovery that wont let me flash the rom but i also cant update that till i figure out how to at least get the phone to a homescreen. I honestly dont know much about odin but it looks like i may be able to try and flash it there, is this correct?
As the topic reads, I've been trying most of the day to unlock the bootloader, I went through the process of obtaining my unlock code and my phone status when typing out a code suggested that it allows unlocking of the bootloader - I'm thinking okay cool, hopefully I'll have Cyanogenmod 12.1 on this thing in no time, right? WRONG! The device needs me to download and install fastboot drivers, which I thought should be an easy process but no matter what I do when I look at my phone through the device manager all I see is 'S1Boot Fastboot' - I even attempted using Flashtool (not Emma) and it too says install failed when trying to download the files needed. I just really need some help getting through this part of the problem, I've downloaded the SDK downloaded the USB drivers, updated them with the file from Sony but the end result remains the same. If it makes any difference (which I'm sure it will) I'm on Windows 10.
Thanks for any and all replies .. Edit // I forgot to mention the model is C833 and I recieved the latest OTA update from Sony for Lollipop 5.1.1
Installing the SDK is quite the overkill.
- Install ADB and Fastboot by downloading and running this tiny installer. It'll do the job for you.
- Install Flashtool and be sure that it recognizes your device. The device should be powered on when you open Flashtool the first time.
- Click the "BLU" button and copy/paste the unlock code you received from Sony.
You're done
Be sure to backup important stuff on your phone, in case something goes wrong. Move photos etc. to your SD card or something.
Klaos3000 said:
Installing the SDK is quite the overkill.
- Install ADB and Fastboot by downloading and running this tiny installer. It'll do the job for you.
- Install Flashtool and be sure that it recognizes your device. The device should be powered on when you open Flashtool the first time.
- Click the "BLU" button and copy/paste the unlock code you received from Sony.
You're done
Be sure to backup important stuff on your phone, in case something goes wrong. Move photos etc. to your SD card or something.
Click to expand...
Click to collapse
I appreciate the reply, and I managed to get the bootloader unlocked (I think) as both ADB and Fastboot are acknowledging my phone now. Problem I have now is while in Cyanogen Recovery, I hit the first option and may have soft bricked this phone - the cyanogen wiki stated I could make a backup by booting back into Android which is what I tried to do. I'm in the process now of repairing it with the PC companion hopefully and then I'll give it another go, this isn't my main phone though so basically I'm just tinkering/trying to learn the basics of installing custom ROMs. Thanks again for the reply, and if you have any other suggestions for me be sure to leave em here. BTW, I never installed the full Android Studio, just the zip file for the ADB and Fastboot files, I attempted that at first but found out you didn't really need em in the first place.
The CM Recovery is... pretty crappy, so don't use it if you don't have to. If you soft brick it (i.e end up in a bootloop or something), then just flash or hotboot a kernel with recovery, and you're good to go again, so you don't have to re-flash a ROM.
You can either use fastboot to flash a kernel (if you know how to use a terminal), or you can use Flashtool, QuickIMG etc, so:
Soft brick?
- Download a custom kernel with recovery. Doesn't matter which one if you're planning to flash a ROM straight away. You're planning to flash CM12.1, so you can use a random Ultra kernel like this one.
- Let's say we'll use Flashtool to flash it (since you already have it installed). Open it, hit the lightning bolt, click "fastboot", and then "kernel". Browse and choose the kernel you downloaded. Now disconnect from the computer and remember to press VOL up to enter recovery when it vibrates or the LED lights up.
- You're now in recovery again and you can go ahead and flash CM12.1. Remember to WIPE before or after you've flashed CM12.1. You'll end up with a bootloop if you don't do it. If you do, flash that kernel again and you're back on track.
Klaos3000 said:
The CM Recovery is... pretty crappy, so don't use it if you don't have to. If you soft brick it (i.e end up in a bootloop or something), then just flash or hotboot a kernel with recovery, and you're good to go again, so you don't have to re-flash a ROM.
You can either use fastboot to flash a kernel (if you know how to use a terminal), or you can use Flashtool, QuickIMG etc, so:
Soft brick?
- Download a custom kernel with recovery. Doesn't matter which one if you're planning to flash a ROM straight away. You're planning to flash CM12.1, so you can use a random Ultra kernel like this one.
- Let's say we'll use Flashtool to flash it (since you already have it installed). Open it, hit the lightning bolt, click "fastboot", and then "kernel". Browse and choose the kernel you downloaded. Now disconnect from the computer and remember to press VOL up to enter recovery when it vibrates or the LED lights up.
- You're now in recovery again and you can go ahead and flash CM12.1. Remember to WIPE before or after you've flashed CM12.1. You'll end up with a bootloop if you don't do it. If you do, flash that kernel again and you're back on track.
Click to expand...
Click to collapse
Gonna give all this a shot since the PC companion doesn't seem to be doing anything - I'll post my findings in a few if you're around. Thanks again man, I really appreciate your help.
Edit // Okay, nothing seems to be working now .. Flashtool says that my device has USB Debugging disabled, and whenever I power on the device you see the Sony logo, then a violet led and then the screen stays on and every once in a while it'll show a small battery indicator.
D2084 said:
Gonna give all this a shot since the PC companion doesn't seem to be doing anything - I'll post my findings in a few if you're around. Thanks again man, I really appreciate your help.
Edit // Okay, nothing seems to be working now .. Flashtool says that my device has USB Debugging disabled, and whenever I power on the device you see the Sony logo, then a violet led and then the screen stays on and every once in a while it'll show a small battery indicator.
Click to expand...
Click to collapse
Hmm, plug in the wall charger and charge it for a bit. I highly doubt that it's hardbricked since that's very very hard to achieve on a Sony device. Just kick it into fastboot by holding VOL UP while you plug it into your computer. The blue LED will light up. Then open Flashtool and flash the kernel, or download QuickIMG and flash the kernel (.img) with it. Be sure that it says "connected" before you do anything. Keep also in mind that you have to be in fastboot.
Klaos3000 said:
Hmm, plug in the wall charger and charge it for a bit. I highly doubt that it's hardbricked since that's very very hard to achieve on a Sony device. Just kick it into fastboot by holding VOL UP while you plug it into your computer. The blue LED will light up. Then open Flashtool and flash the kernel, or download QuickIMG and flash the kernel (.img) with it. Be sure that it says "connected" before you do anything. Keep also in mind that you have to be in fastboot.
Click to expand...
Click to collapse
I seem to have a brand new issue now, umm whenever I unplug the device and press VOL UP, I get this distorted screen. It's blue and has what looks to be white wording in the middle, I can't make it out though, this is after I put the kernel you recommended on my device. The kernel is the IMG file, correct?
Just thought I'd give you a bit of an update, I now have Cyanogenmod 12.1 on my Xperia Z Ultra - I flashed the custom recovery that came with the nightly I downloaded and then moved the actual zip to an SD card since like you said Cyanogen Recovery is a bit wonky (I tried sideloading to no avail). I have a couple question though, during the install process I noticed it said something about there 'no such volume' and I was sure I seen two failed prompts too but the ROM is on my phone? Should I look into that at all or is it fine? Most things seem to work .. camera, bluetooth, gonna have to throw my sim in there one of these days and test the cellular radios, but I just wanna say thanks again .. I learned a lot and managed to make something happen even if it's something small like installing a custom rom lol
D2084 said:
Just thought I'd give you a bit of an update, I now have Cyanogenmod 12.1 on my Xperia Z Ultra - I flashed the custom recovery that came with the nightly I downloaded and then moved the actual zip to an SD card since like you said Cyanogen Recovery is a bit wonky (I tried sideloading to no avail). I have a couple question though, during the install process I noticed it said something about there 'no such volume' and I was sure I seen two failed prompts too but the ROM is on my phone? Should I look into that at all or is it fine? Most things seem to work .. camera, bluetooth, gonna have to throw my sim in there one of these days and test the cellular radios, but I just wanna say thanks again .. I learned a lot and managed to make something happen even if it's something small like installing a custom rom lol
Click to expand...
Click to collapse
Just ignore that error. I've seen that myself a couple of times, and I don't know what it means, but it doesn't seem to affect anything.
There are a couple of things to keep in mind. CM12.1 has had some glitchy WiFi in the past, and I believe some people are still experiencing issues, so if you also experience some WiFi issues, it's a CM issue and not a hardware issue. Also, keep in mind that the Ultra GPe (Togari GPe) exists and is also supported by Cyanogen, so be sure to not flash the wrong version since the partitions are different between those two. I believe the recovery system will stop you from flashing it though.
Since Sony devices do not have a default recovery system, we have to bundle it with the kernel, so all custom ROMs around here, including CM, will have a recovery system added, but if you flash a ROM without a recovery system (like a stock ROM that you flash with Flashtool), you'll have to flash a kernel with a recovery yourself.
It's pretty easy to recover from issues and stuff on a Sony device once you know how things work. It's also a good idea to learn how to use flashboot through a terminal since that will potentially save you a lot of time down the road
Klaos3000 said:
Just ignore that error. I've seen that myself a couple of times, and I don't know what it means, but it doesn't seem to affect anything.
There are a couple of things to keep in mind. CM12.1 has had some glitchy WiFi in the past, and I believe some people are still experiencing issues, so if you also experience some WiFi issues, it's a CM issue and not a hardware issue. Also, keep in mind that the Ultra GPe (Togari GPe) exists and is also supported by Cyanogen, so be sure to not flash the wrong version since the partitions are different between those two. I believe the recovery system will stop you from flashing it though.
Since Sony devices do not have a default recovery system, we have to bundle it with the kernel, so all custom ROMs around here, including CM, will have a recovery system added, but if you flash a ROM without a recovery system (like a stock ROM that you flash with Flashtool), you'll have to flash a kernel with a recovery yourself.
It's pretty easy to recover from issues and stuff on a Sony device once you know how things work. It's also a good idea to learn how to use flashboot through a terminal since that will potentially save you a lot of time down the road
Click to expand...
Click to collapse
Everything seems to be working quite well so far, including the wifi but I'll keep what you said in mind. I used the same process to install GApps on it too so now I have the play store and google apps install as well. I have another question though, whenever I plug in a charger to charge the device .. I notice the screen never goes off but stays black and has nothing on display sorta like ambient display, would you know if that's a feature of Cyanogenmod or did I goof somewhere during the install? Thanks in advance for your reply.
D2084 said:
Everything seems to be working quite well so far, including the wifi but I'll keep what you said in mind. I used the same process to install GApps on it too so now I have the play store and google apps install as well. I have another question though, whenever I plug in a charger to charge the device .. I notice the screen never goes off but stays black and has nothing on display sorta like ambient display, would you know if that's a feature of Cyanogenmod or did I goof somewhere during the install? Thanks in advance for your reply.
Click to expand...
Click to collapse
Could it be Daydream? Go to Settings -> Display -> and disable Daydream. Now check again. If it's not Daydream causing it, then it might be a bug. Do a reboot in case it's a small glitch of some kind. If it's still on when charging, then I'm not sure what it could be (other than a bug, that is).
Sorry for the late reply, but I figured out the reboot issue .. I had to turn off the 'wake up' feature when you plug in your device. I have a whole new issue though, I'm not sure if it can be resolved though - I was on the phone with MetroPCS for about an hour trying to figure out why my phone wouldn't connect to their network. I know Cyanogenmod comes with APN's pre-installed but even after the representative tried helping me set up a new APN .. it was a no go, so I switched back to the current phone I'm using - Alcatel Idol 3 4.7 .. anyways, I'd like to hear your input on what the issue could be as I'd really like to go back to using this phone since the software aspect is far more flexible with a custom ROM like Cyanogenmod.
D2084 said:
Sorry for the late reply, but I figured out the reboot issue .. I had to turn off the 'wake up' feature when you plug in your device. I have a whole new issue though, I'm not sure if it can be resolved though - I was on the phone with MetroPCS for about an hour trying to figure out why my phone wouldn't connect to their network. I know Cyanogenmod comes with APN's pre-installed but even after the representative tried helping me set up a new APN .. it was a no go, so I switched back to the current phone I'm using - Alcatel Idol 3 4.7 .. anyways, I'd like to hear your input on what the issue could be as I'd really like to go back to using this phone since the software aspect is far more flexible with a custom ROM like Cyanogenmod.
Click to expand...
Click to collapse
Are you talking about connection to their network altogether, or just data? Do you have reception? Check that data is enabled in Settings -> Data usage.
I can guarantee that this is a software issue, BUT one last question. How old is your SIM card? There have been a few cases when people have been in the same situation as you, got a new SIM, and that fixed the issue. You could do that, or flash another ROM. CM12.1 is beta, so bugs have to be expected, and it's far from a solution if you plan to just flash something and use it for a longer period of time. If you want something very stable and stock, then highly recommend Scrubber's GPe 5.1 port, which is rock solid.
Well my sim card isn't too old, had it for about a year. Once she laced the sim card to the new phone I could make calls and texts but for some reason the Internet wasn't working - she had me go through all the steps to make sure things like data was enabled and airplane mode was off but it still resulted in not being able to establish a connection to the web. So I'm gonna try and flash the GPE rom you're talking about later on tonight once I get home from work and see what happens then - mind leaving me a link to the rom/recovery? Thanks in advance.
D2084 said:
Well my sim card isn't too old, had it for about a year. Once she laced the sim card to the new phone I could make calls and texts but for some reason the Internet wasn't working - she had me go through all the steps to make sure things like data was enabled and airplane mode was off but it still resulted in not being able to establish a connection to the web. So I'm gonna try and flash the GPE rom you're talking about later on tonight once I get home from work and see what happens then - mind leaving me a link to the rom/recovery? Thanks in advance.
Click to expand...
Click to collapse
Sure. Here it is. Remember to download 5.1, and not 5.0. Recovery is included in the ROM, so you don't have to flash anything else.
Quick update, I've flashed the ROM but so far it seems to be stuck in a bootloop, its been stuck on the swaying Google logo for about 10 minutes now. It might be because I sideloaded using a micro SD card because for some odd reason the 'flash the system' option on Flashboot wasn't working for me. So I turned the phone off and will give it another try tomorrow, if you have anymore tips for me I'll be glad to hear em.
D2084 said:
Quick update, I've flashed the ROM but so far it seems to be stuck in a bootloop, its been stuck on the swaying Google logo for about 10 minutes now. It might be because I sideloaded using a micro SD card because for some odd reason the 'flash the system' option on Flashboot wasn't working for me. So I turned the phone off and will give it another try tomorrow, if you have anymore tips for me I'll be glad to hear em.
Click to expand...
Click to collapse
How did you flash it? It must be flashed in recovery on the device and not using Flashtool. Flashtool is strictly for stock Sony ROMs or FTFs. Never use it for anything else besides flashing FTFs and kernels. So:
- Go into recovery
- Remember to wipe! If you don't, you'll get a bootloop
- Install from SD card
- It will probably throw an error at you, but don't touch anything. It's still flashing.
- Reboot
- Wait a couple of minutes.
Klaos3000 said:
How did you flash it? It must be flashed in recovery on the device and not using Flashtool. Flashtool is strictly for stock Sony ROMs or FTFs. Never use it for anything else besides flashing FTFs and kernels. So:
- Go into recovery
- Remember to wipe! If you don't, you'll get a bootloop
- Install from SD card
- It will probably throw an error at you, but don't touch anything. It's still flashing.
- Reboot
- Wait a couple of minutes.
Click to expand...
Click to collapse
Just did everything you just said, will update you tomorrow with results.
Well I did what you said and left the phone to charge overnight - it was in bootloop when I went to sleep and .. bootloop when I woke up (at least it's charged now lol) I'm gonna try again though. I see that CWM has a sideload option, so I'm gonna wipe everything and try to sideload it from the ADB through the command prompt and see what happens. Feel free to leave any other suggestions though.
Got a question though, when I sideload the zip file should I sideload everything within the zip file or just the system image file? Maybe I'm getting bootloop because I'm installing a kernel on top of another kernel?
D2084 said:
Well I did what you said and left the phone to charge overnight - it was in bootloop when I went to sleep and .. bootloop when I woke up (at least it's charged now lol) I'm gonna try again though. I see that CWM has a sideload option, so I'm gonna wipe everything and try to sideload it from the ADB through the command prompt and see what happens. Feel free to leave any other suggestions though.
Got a question though, when I sideload the zip file should I sideload everything within the zip file or just the system image file? Maybe I'm getting bootloop because I'm installing a kernel on top of another kernel?
Click to expand...
Click to collapse
Sideload/flash the .ZIP. Do not extract it. You should simply just boot into recovery, choose "ScrubberPortRom_GPE5.1_LMY47D.zip", flash and wait for a couple of minutes and then reboot. That's it. The first boot should take around 5 minutes.
- Remember to do a full wipe in recovery before you flash
- Flash ScrubberPortRom_GPE5.1_LMY47D.zip
- Reboot
And do share any error messages if you get any while flashing.
Hello, XDA forumites!
I've been lurking and reading a lot of threads in here for years, using all your knowledge to fix various phones. Today though is the day I first post and it is for good reason. I'm a guy who loves challenges but this one is making me go insane. I've spend the last two days looking for ways to fix this phone but NOTHING works.
So, the deal is that this phone turns on fine. It boots, it gets to the lockscreen and... it restarts itself. Again and again and again until the battery is removed. To fix it, I've tried the following:
- recovering/updating it through the Huawei official "firmware" supplied by the site: you put the file they supply on an SD card, inside a folder named "dload" and then hold vol up and down along with the power button to make the phone install the contents of that file, named UPDATE.APP. Needless to say it doesn't work. A menu appears with the options reboot system now, apply update from sdcard, apply update from cache, wipe/data factory reset, wipe cache partition and calibrate touch screen. Trying to apply update from sdcard only lets me browse the SD looking for the file but doesn't actually see the file itself, it just shows the dload folder empty (I've tried with 4 different versions of the file compatible with phones from Central America which is where I am ATM). Also, the factory reset does nothing (although it shows it wipes data), everything's there when I start the phone up.
- flashing it with SD Flash Tool: apparently partially works with the last version 3 of the tool (although nothing changes) while version 5 of SDFT doesn't even see the phone (drivers are correctly installed, adb detects it, more on this later). A problem that arises is that I can't flash the SEC_RO package on it (don't know why) nor the PRELOADER (not that one is supposed to normally, but I feel like it would fix my problem in this case).
- cleaning it in safe mode: booting it in safe mode made me notice that it was an app pretending to be Whatsapp causing the restarts (or, perhaps, the one that loads immediately after? The phone has several malware apps). In safe mode those apps didn't load so the phone stayed on. So I cleaned everything, activated USB debugging (for later use in adb mode) and restarted only to find everything as it was before I did the cleanup. I tried rooting it in safemode, cleaning again, still reverts to full "normality" after the restart. Same results when using the phone's proprietary SW HiSuite.
- installing CWM's recovery img through adb+fastboot: I installed all the possible - necessary or unnecessary - drivers (Google's, phone's official ones, PDANet ones) and the phone is correctly detected by the PC (visible in Device Manager) and is visible through the adb devices command. But as soon as I adb reboot bootloader it to fastload the CWM image, the phone stops being seen correctly and doesn't show up in fastboot devices, only showing "NEW: SAFE OLD:RISK" on a black background on its screen.
So, to recap: the phone restarts because of a malware at startup, reverts any and all changes made to it in safemode, doesn't wipe from the recovery menu, apparently has a corrupted bootloader and is impervious to normal flashing SW... Anyone got any more ideas on how to deal with it? The only option left that comes to mind is to fix it directly by flashing the internal memory using JTAG/RIFF but I don't have the equipment (nor do I intend to buy it).
Bump, hoping for some help...
One more bump, still stuck
First, don't get happy: I have no answer to your problem. Sorry. But I have a similar one. I was running a very efficient, rooted, stock ROM G730-U251, until I decided to switch from 'Ninjamorph Free' to 'Pro'. I've been made a lot of changes with Free version for a long time without any issues at all. Then, one day, when making a small, useless change with 'Pro', something went wrong; phone just rebooted and refused to get past bootanimation. With no custom recovery on hand, only solution for this is to flash ROM. Though I had no problem finding the official, stock UPDATE.APP, which flashed smoothly from the SD card to be fair. Mess came when, once flashed, I decided to install OTA update available, which I overlooked since phone was new. Big, BIG mistake. It just came with more restrictions than ever, letting me root, yes, but this time with 'Kingroot' only (as stock, I had no problem rooting with Framaroot) but soon discovered I wasn't able to use 'Super-Sume', 'Adaway' and 'Link2SD', because some system parts now CAN'T be mounted rw, even using ES File Explorer. To avoid any complication, decided to reflash UPDATE.APP just as I did before. No way I can do it this time. Don't know exactly why, but assuming it's not possible to update with a previous version of the 'same' ROM. So now I'm looking for a flashable stock ROM in order to try SP flash tool. Phone is in working state right now (not as yours), but I just don't feel comfortable with it as it is right now, because those apps are always the main reason why I actually root every single of my devices and simply because I like to have my stuff as my own way as possible. You know, truth is there's not much of an advanced support for this phone, not even here at XDA and I think that's because this is a Latin America version. We owners of G730-U251 devices are pretty much on our own, to say the least. Whatever, if the whole deal gets more complicated than it is, there's a strong possibility for me to end up getting rid of this phone. Sad. Really. It's actually a good phone. Though it WAS better...