[Q] Phone is not being seen by computer when plugged in, usual solutions do not work - AT&T LG Optimus G

Hello all, thanks for helping me out.
I did a very foolish thing. I rooted my phone and deleted a few bloatware apps that were apparently very important to the phone's functionality. I did not install any recovery software like CWM, fastboot, or anything. It was a stock phone that I simply rooted to remove a few apps. When I went to restart my phone, I found out that I bricked it. Now my phone will only enter Download Mode if I hold the up+down volume buttons and plug it in, or it will get stuck on the LG logo screen and a Security Error screen. A factory reset with the volume down + power will work, but does nothing to fix it.
My immediate issue is that when I plug my phone into the computer, the phone will recognize it has been plugged into a power source (it will either go into Download Mode if I was hitting the volume up+volume down buttons, or start trying to boot up but cycle through the LG logo screen and Security Error screen) but the computer will not acknowledge that anything has been plugged in. There is nothing new listed in the Device Manager. I have read other threads and searched around on the internet. The usual solutions are not working for me:
I have tried several other cables and computers to no avail. I have also tested my current computer/cable, and it worked for data transfer with another phone (Nexus 4)
I have tried cleaning out the contacts on the phone. They were not significantly dirty.
I have tried installing the drivers from LG and even the UniversalNakedDriver
I believe that if I could get my computer to see my phone, I could flash the stock rom back and restore it to working order via LGNPST. I know it is simply a software issue, because prior to my rooting the phone it was recognized by the computer.
Does anyone have any other solutions I haven't tried? Or is this something I need to go JTAG on?

Related

Bricked after installing CM custom rom.

Hi, I just bricked my phone while installing the CyanogenMod stable release. Chances are that the zip file i downloaded was corrupted (The filesize was much smaller, must be an internet disconnection that i did not realise) and I am unable to boot into neither download mod nor recovery mode. When holding the volume up and power button, I see the load screen with the yellow triangle (obviously), and it turns black, and the same screen appears again, except that this time, it stays that way.
I tried to see if Odin can detect the phone but because it is not in download mode, it could not detect anything even when kies was switched off. (checked task manager to make sure i killed it) However, the computer was clearly able to detect the phone. (I am using vm ware and when i connect the usb to the phone, i am prompted to choose between connecting it to windows or mac) I then tried to do it in pure windows but odin was still unable to detect the phone. I tried Heimdall to no avail as well. My jigg should arrive in 2 days but from what i seen from the [debunk] Jigg thread, I am not confident that it'll bring me into the download screen.
Is there anything that can be done without sending it for repair? Thank you
Get your battery out the phone, put it back in and hold Volume-down + Home + Powerbutton immediatly pressed, You may have to repeat this several times. When its needed to repeat it more then once let the battery every try some more time out you device.
When You get into downloadMode flash an OdinRom
Hope it will help.
Alright! Thankfully, that worked after a few tries. Tried to flash CM7 again but apparently, it does not work. Think i'll have to ask people in the relevant thread. Thanks again!

[Q] Can't get to Download Mode - stuck on loading screen

Hi All,
So, I tried to flash Cyanogen mod last night using the instructions here: http://wiki.cyanogenmod.com/wiki/Samsung_Vibrant:_Full_Update_Guide. I was coming from a BIONIX ROM that flashed fine.
Anyways, the phone went into a reboot loop in the recovery screen and I foolishly just held the power button until it stopped. When I turned it back on it was broken. That is, now all it does is display the white Vibrant logo in the middle of the screen with the smaller Samsung logo below it. If I hold the power button for about 8 seconds the screen goes black for about 2 seconds and then comes right back up to where it was. I can't seem to even turn the phone off any more. It just stays on that screen permanently unless I hold the power button, in which case the screen is off for 2 out of every 10 seconds. Yanking the battery of course turns it off, but putting it back in immediately returns it to the state I've described.
I've scoured these forums and tried every button press + battery state + cable state + SD card/SIM state combo suggested, but the phone won't go to download or recovery mode. I found one thread describing the exact same problem. The OP said he'd try a jig and then disappeared without any further updates. I'm going to try to get my friend to make a jig using one of these sets of instructions
http://forum.xda-developers.com/showthread.php?t=819551
http://factoidz.com/how-to-unbrick-your-samsung-vibrant-galaxy-s/
but until then my questions is: does anyone have any experience with this problem (can't even turn the phone off)? If so, do you have any recommendations? Did a Jig work?
keep trying to get to download mode, pull battery, plug usb in to computer and to the phone, while holding both volume up and volume down pop in the battery. People have tried hundreds of times with it not working and then all of a sudden *bam* download mode.
So... my friend made me a jig and it works in that I can see the shoveling droid indicating download mode. However Heimdall/Odin won't recognize my phone. Heimdall's zadig utility won't locate the phone either, even with the cable plugged in. I'm, once again, stumped.
Just an update; I've tried Odin on three different computers, two Windows 7 (64 bit) and a Mac (with Heimdall). None of them seem to recognize the phone. Device manager on the Windows 7 machine does not update when I plug the phone in (in Download mode via the jig or not) and I can't find anything about Samsung in it anywhere. However I have installed the Samsung drivers; a few different sets I've found around the forums. I've also tried a couple utilities like the Vibrant toolbox and one click unbrick. Nothing seems to have any effect. I was so hopeful when the jig worked and got me to download mode, but now it's seeming I'm actually bricked. Has anyone seen a phone that could get to download mode but still be bricked? Oh, and I checked the cable using a friend's phone; her Mac recognized her phone using the cable. Haven't tried her phone on my Window's machines though.
Once again, any help is more than appreciated.
Have you tried to see if adb is working? If it does then try adb reboot recovery? If it works there is a file I can post for you later (is in my pc) that can restore your sbl.bin and fix your download mode problems.
Thanks for your help everyone, the problem was apparently resolved by a new cable; which is strange because the old one works for data transfers... just not for flashing apaprently. :S

help please!! i777 won't start and I run out of ideas

I have a rooted i777 with SHOstock rom, I haven't updated the rom for a few months so I'm not sure which version it is.
The phone was working yesterday and it suddenly got stuck so I tried to reboot it (had to take out the battery because the power button didn't respond) but now each time I try to turn it on it is stuck on a black screen with the logo "Samsung Galaxy SII" and won't progress.
I tried to boot to recovery but it shows a screen saying "CWM-based Recovery v6.0.2.7" but it doesn't go pass the screen to show the recovery menu (it just reboots after being stuck on this screen for about a minute).
I tried to boot to download mode and succeeded, but every time I connect the device to my pc, the pc doesn't recognize it
(I tried re-installing kies, but it didn't help and probably the problem is not with the pc drivers because if I connect my wife's unrooted i777 to the pc it does recognize it).
so now I don't have clue what else to try.
any advice will be appreciated.
Make sure you have Odin v1.85 on your Windows PC. Look in the Windows Add/Remove programs dialog (or Uninstall a Program dialog) to see if you have SAMSUNG USB driver for mobile phones.
Open Odin on the desktop. Next put the phone into download mode by holding down vol + and vol - while plugging in the USB cable.
If Odin recognizes your phone, flash back to stock. I would recommend UCMD8 stock firmware, which you can get from the Download Repository.
don't know what happened to it but now it doesn't even turn on.
it's stopped turning on before I had a chance to try what you suggested.
now even if I connect it to the charger it doesn't show the charging status.
is there any other "force something" I can try?
kokoman said:
is there any other "force something" I can try?
Click to expand...
Click to collapse
Remove the battery and leave it out. Connect the USB cable to your PC. While holding down the vol- button (also try it with both vol- and vol+) but not the power button, plug the USB cable into the phone. The computer will provide the power. If this works, your phone will go into download mode. If not... you have very likely had some kind of hardware failure.
unfortunately it didn't work.
can't get it to download mode.
I'll try to leave the battery out for a longer time and try again.
should I try ordering a JTAG usb and see if it puts it in download mode or
probably my only option is to send it to mobiletechvideos?
I had the same problem, Your battery got too low. Pull your battery and leave it out for a while 15 mins or so. Put the battery back in and connect charger. Let the battery charge for a while without trying to turn on phone. The phone will not turn on with a dead battery even if it is connected to charger.
I just solved a problem that I didn't find any help with, so I thought I would post it here in case somebody else needs help out of this situation, and this is a recent and related thread.
After I pulled the battery of my i777 to test in another phone, without remembering to power my phone off first, it would only hang at the Samsung boot logo (stock UCMD8 ROM, rooted, stock recovery). Normally the Samsung boot screen shows for only about five seconds. Pulling the battery wouldn't get it to boot right. Holding Power to force a reboot didn't solve it. After clearing the cache it would move to the AT&T Rethink Possible screen once, then reboot and then again get hung on the Samsung logo screen. Also my battery was heating up a lot as it was hung.
I could get into both download mode and recovery. I tried reflashing my ROM from the stock file in ODIN since that would save all of my data IF it worked. This still didn't get it to boot past the first logo. Finally doing a factory reset on stock recovery is what solved my problem. I had to re-add my account and reload apps from scratch, etc.

[Q] Phone won't turn on??

I'm currently using a P769 model with JB, and it's never been rooted. I remember the phone was 100% charged when I looked at it three days ago and I didn't use it at all the day after that, but when I tried to use it yesterday it didn't turn on and it hasn't been responding since (I did try to charge it a few times). Actually the exact same thing happened a few months ago but it fixed itself in a few hours, but this time it's been two days and I hope it doesn't mean my phone is completely bricked The main thing is that I want to avoid doing a factory reset if at all possible since I made the mistake of not creating a backup.
I've tried some recovery tools (LG Mobile Support along with third-party) but the problem is that nothing seems to recognize my phone as connected. Weirdly enough, when I plug it in it without the battery, it connects and disconnects continuously (the device manager refreshes itself every 3-4 seconds); I've updated the USB drivers and everything, but nothing seems to work. Not sure what the Recovery Mode key combination is but I'm assuming the phone has to boot first for Recovery Mode to even be accessible anyway, so that's probably out of the question. However I have tried Vol+, power and Vol+, power, home, and nothing happens.
To make the recovery software recognize your phone,you must put it in S/W mode by disconnecting your phone,taking out the battery,reinserting the battery and then,while holding the volume+ button,plugging it into your computer(keep holding volume+ until the screen says S/W just to be safe).At least that's what I always did.
Hmm... I tried that, and nothing happens on my phone, but I get a popup from the system tray on my computer that says "USB device not recognized: The last USB device you connected to this computer malfunctioned, and Windows does not recognize it" which appears and disappears repeatedly. It appears that no software can recognize the phone as connected at this point. I think it might be a random battery failure but I don't know how to tell D:
The thing is all I really need out of the phone is the contact and app data if possible, which is why I'm so hesitant to do a hard reset :| I read around and I'm assuming what I should do is to flash the bootloader but I'm not sure how to go about doing that since I'm getting zero response from the phone itself.....
UPDATE: Tried a hard reset anyway, but still nothing from the phone. I attempted fastboot, however, I don't know how to make it work since "OMAP4430" does appear under TI Devices in Device Manager plus an "Unknown USB [device failed enumeration something something]" under USB Controllers, but that's it.... nothing appears under Other Devices, which seems to be where the bricked phone should show up. adb doesn't seem to recognize it either.
i have the same problem with my lg p760.
any solutions?
you had a solution for this problem ?

Oppo joy: bricked or not

I tried repairing oppo joy smartphone for my cousin. The phone can turn on but remains in bootloop. Most guides said i can easily solve the problem by hard reset, holding power and volume button at same time and entering recovery mode. The problem is it won't entering the recovery mode or even the factory mode. One guide i read, the phone is essentially bricked if i am unable to access recovery mode so that makes me wonder.
However i tried another method by using software through pc. I downloaded usb driver, firmware and odin like software. I remove battery, connect usb, hold power and volume up together and pc is supposed to recognize and install driver or go through with rom installation. But nothing happened. Only a sound like a new device discovered after holding the buttons and it keeps buzzing every 2 seconds nonstop.
Please help me whether this is a sign of defeat or something can be done since i find brick is a term where a phone does not power on at all

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