Weird SPFT behaviour - TWRP flashes successfully, but stock recovery keeps showing up - Android Q&A, Help & Troubleshooting

Hi XDA,
I'm trying to root my Blackview BV6000/Cherry Moile Defender. Doing this the SPFT way as described in http://www.gizbeat.com/10576/blackview-bv6000-twrp-and-root-mt6755-helio-p10-guide/ .
Issue is, SPFT says flashing is ok and i get the check mark at the end. I even managed to format the phone's emmc and soft bricked it and revived it back - booted and usable. Did this by getting a full ROM image set from needrom.
So, I try to keep flashing using the scatter file which came with the TWRP image zip file set. Funny thing is, it won't flash if I don't specify a preloader file.
So I specify one pointing to the preloader.bin which came from a full set ROM. It will flash successfully. Problem is, when I try to load the recovery, it shows the STOCK recovery which came with the device when I power it on.
I tried to "cheat" this by placing the TWRP recovery image and placed it in a working SPFT rom set in place of the stock recovery image. The full ROM images flashes successfully, but i still get the stock recovery when pressing vol up+power buttons.
WHAT IS GOING ON HERE? can someone help/explain???
Thanks,
Device Type – Android Rugged Smartphone
Brand – BlackView
Model – BV6000
CPU- Octa-Core 2.0 GHz ARM Cortex-A53 CPU
Chipset – MediaTek Helio P10 MTK6755
Camera – 13 Megapixel With LED Flash | 5 Megapixel Front camera
Memory – RAM-3GB | ROM 32GB with microSD card slot up to 128GB
Display – screen size 4.7 inches HD
Dimension – 152.3 mm x 81 mm x 16.6 mm
Battery – Non-Removable Lithium-Polymer 4,500 mAh battery with Fast Charging
Dual SIM (Micro SIM + Micro SIM Slot) Smartphone
Support 2G/3G/4G Networks with a data speed of Download Up to 42 Mbps, Upload Up to 5.76 Mbps in 3G and LTE Cat6 300 / 50 Mbps in 4G networks.
Sensors – Ambient Light Sensor,Gravity Sensor,Proximity Sensor
Color:Black, Green, and Yellow
Operating System: Android 6.0 Marshmallow

Yes, everything is very simple really! After installing TWRP you need to immediately log into it ... if you boot into the system then TWRP will be overwritten ..
TWRP use on the core 0919

SapientAgent said:
So, I try to keep flashing using the scatter file which came with the TWRP image zip file set. Funny thing is, it won't flash if I don't specify a preloader file.
So I specify one pointing to the preloader.bin which came from a full set ROM. It will flash successfully. Problem is, when I try to load the recovery, it shows the STOCK recovery which came with the device when I power it on.
I tried to "cheat" this by placing the TWRP recovery image and placed it in a working SPFT rom set in place of the stock recovery image. The full ROM images flashes successfully, but i still get the stock recovery when pressing vol up+power buttons.
Click to expand...
Click to collapse
Hi. I do not really know if I can help but I had a similar issue with a Lenovo device of mine. I went through flashing TWRP over and over again without ever being able to actually boot to it. All I was getting was stock recovery.
In the end I installed root essentials which has a really helpful option to boot straight to recovery. Literally with the press of a button! Worked perfectly!
What I realized was that recovery was flashed correctly from the beginning but I could not access it with power button and volume plus or minus combinations. What I was seeing with those combos, was factory settings, which is different from recovery.
Give it a shot if you wish, either install root essentials or any other app of your choice. An app that "opens up" more reboot options than stock. Having root, there are quite a few out there.

Finally figured it out.
The ROM I got had startup scripts which reverted the recovery image at boot time!!!!
Solution: I flash the ROM, then flash TWRP recovery right away, then access recovery before first boot then install root so the scripts don't work given that prompt at TWRP exit to prevent loss of root access.
r&xp said:
Hi. I do not really know if I can help but I had a similar issue with a Lenovo device of mine. I went through flashing TWRP over and over again without ever being able to actually boot to it. All I was getting was stock recovery.
In the end I installed root essentials which has a really helpful option to boot straight to recovery. Literally with the press of a button! Worked perfectly!
What I realized was that recovery was flashed correctly from the beginning but I could not access it with power button and volume plus or minus combinations. What I was seeing with those combos, was factory settings, which is different from recovery.
Give it a shot if you wish, either install root essentials or any other app of your choice. An app that "opens up" more reboot options than stock. Having root, there are quite a few out there.
Click to expand...
Click to collapse

Related

[Q] Help with root and recovery on HDC Galaxy S4 EX

Hi All
I have recently purchased two HDC Galaxy S4 EX phones which have the MTK6589T 1.5GHz CPU and 2GB RAM/32GB ROM.
I have been trying to get a CWM Recovery installed on it as well as rooting it but so far I have had no luck at all.
Firstly, I tried using MTK Droid Tools to modify a dump of my ROM and uploaded the recovery back to the phone using this procedure:
http://forum.xda-developers.com/showpost.php?p=38337401&postcount=5
I did this by dumping the ROM off phone 1 (which I was avoiding starting up until I had a stock ROM backup) while I was playing around with phone 2. Phone 2 was booting into recovery mode by holding VolumeUp + Power and booting into a chinese factory mode by holding VolumeDown + Power. The recovery mode was very basic and did not have CWM.
So anyway, I dumped the ROM from phone 1 with SP tools, created a modified recovery image with MTK Droid Tools and downloaded that to phone 2. However I could not load either recovery mode or factory mode any more. No matter what key combination I tried the phone would just boot normally. I flashed back the unmodified recovery image and had the exact same problem. It wasn't until some time later I tried booting phone 1 and found it did not boot into recovery mode at all either . Unfortunately I only dumped the ROM from phone 1 and not phone 2 so I don't have a copy of the recovery image that seemed to boot ok on phone 2
So anyway, I have tried flashing a whole heap of recovery images from all sorts of HDC S4 sources but I have never been able to boot into any form of recovery mode with any of them. They ALWAYS just boot normally using either volume up or volume down. I'm not sure if that is because all of the images are for the 1.2GHz CPU instead of the 1.5GHz CPU.
The second problem is that I cannot root this phone at all.
I have tried the motochopper exploit which seems to be the only root option I have found for these phones (there are lots of options but they all appear to be the same tool).
When I run that root tool it copies the pwn, su and busybox to the phone fine but whenever it runs the pwn script it just comes up saying "Failure" without any explanation why.
The same thing happens when I try to use the root option with MTK Droid Tools.
So I'm at quite a loss right now, I can't get a CWM recovery image working and I can't get root....
I've tried flashing some of the HDC S4 ROMs but so far none of them have booted (I'm guessing because it is the MTK6589T model?).
The only option I have had is to flash back my original ROM dump.
Is there any way to alter a recovery image to change the boot keys it uses?
Are the boot keys even defined in the recovery image? is it maybe something else like the preloader or boot image I should be trying to change?
Any help at all would be greatly appreciated, I can't wait to start customizing my own ROM for this phone... :victory:
OMG, I just found a random post somewhere for a completely different phone that stated the following:
Plug you phone with your pc with a usb cable (IMPORTANT STEP)
hold the power + volume down to enter factory mode
hold the power + volume up to enter recovery mode
Click to expand...
Click to collapse
So I plugged my phone into USB and it was able to boot into recovery correctly.
I must have had the cable connected the first time I was playing with phone 2 and always had the cable removed every time I tried booting the phone after a new recovery image flash.
I've flashed back the fist recovery image I created with Mtk Droid Tools and CWM is working perfectly!
Now the next trick.... trying to get it rooted....
I created a custom ROM with root installed in the ROM so all is good.
The ROM is available here:
http://forum.xda-developers.com/showthread.php?t=2474992

Another noob, another bricked phone.

Hello all.
I am a first time poster, but a long time stalker of this site. I'd like to start off by saying I am very impressed by this forum. There are a lot of intelligent people and a lot of excellent work being done around here, keep it up!
On to the problem:
To make a long story short, I attempted to flash a custom ROM onto my phone and wound up with a soft brick (I think, the definitions of hard and soft bricks are quite vague all over the internet...).
Phone: Alcatel One Touch Evolve 5020t (TCT Mobile)
Android version: 4.1.2 (Jellybean)
Root access: Yes
Custom recovery: Unsure, but leaning toward no. ROM Manager said I had TWRP and CM installed, but I have never been able to boot into custom recovery mode...
Bootloader: Unsure. I believe it is locked.
OK, Here's what happened: I forgot to wipe my SD card/cache before flashing. Flashed phone, Phone rebooted to the manufacturer screen, then goes dead. Power button turns phone on but phone will not get past the manufacturer splash screen. Tried to boot in recovery mode by pressing vol up + power, the bootloader comes up, but only the options "Reboot System" and "Reboot in Recovery Mode" appear. Selecting either option results in the same thing: Phone dies after manufacturer screen.
Connected via USB:
PC will no longer recognize the device. When phone is powered on and connected, PC makes the sound for a connected device, then makes the sound it makes when you disconnect. It does this multiple times. Powered off it does the same thing. With battery removed, phone will not power on, but displays the charging battery picture.
I have read that formatting my SD card can fix this somehow, but haven't attempted it yet.
I have stock ROM image for the device. I have backups saved on the SD and my PC.
Can anyone help me?
Hi
I have soft bricked my MetroPCS one touch evolve. it is 5020N
I can only start the recovery mode , but the phone will not boot.
you said you have a image of the stock rom. do you THink I can flash the stock image using the stock recovery?
thanks
Hey can someone help me unbrick my alcatel one touch evolve tmobile? I tried using adb and sdk but its not working correctly for some reason. It just says closed every time i try to execute a command... :/
Mr. Sinister said:
Hello all.
I am a first time poster, but a long time stalker of this site. I'd like to start off by saying I am very impressed by this forum. There are a lot of intelligent people and a lot of excellent work being done around here, keep it up!
On to the problem:
To make a long story short, I attempted to flash a custom ROM onto my phone and wound up with a soft brick (I think, the definitions of hard and soft bricks are quite vague all over the internet...).
Phone: Alcatel One Touch Evolve 5020t (TCT Mobile)
Android version: 4.1.2 (Jellybean)
Root access: Yes
Custom recovery: Unsure, but leaning toward no. ROM Manager said I had TWRP and CM installed, but I have never been able to boot into custom recovery mode...
Bootloader: Unsure. I believe it is locked.
OK, Here's what happened: I forgot to wipe my SD card/cache before flashing. Flashed phone, Phone rebooted to the manufacturer screen, then goes dead. Power button turns phone on but phone will not get past the manufacturer splash screen. Tried to boot in recovery mode by pressing vol up + power, the bootloader comes up, but only the options "Reboot System" and "Reboot in Recovery Mode" appear. Selecting either option results in the same thing: Phone dies after manufacturer screen.
Connected via USB:
PC will no longer recognize the device. When phone is powered on and connected, PC makes the sound for a connected device, then makes the sound it makes when you disconnect. It does this multiple times. Powered off it does the same thing. With battery removed, phone will not power on, but displays the charging battery picture.
I have read that formatting my SD card can fix this somehow, but haven't attempted it yet.
I have stock ROM image for the device. I have backups saved on the SD and my PC.
Can anyone help me?
Click to expand...
Click to collapse
Did you solve this problem? Do you still have the stock ROM image?
hi could u send me the stock ROM image of the Alcatel One Touch Evolve 5020t ?
Mr. Sinister said:
Hello all.
I am a first time poster, but a long time stalker of this site. I'd like to start off by saying I am very impressed by this forum. There are a lot of intelligent people and a lot of excellent work being done around here, keep it up!
On to the problem:
To make a long story short, I attempted to flash a custom ROM onto my phone and wound up with a soft brick (I think, the definitions of hard and soft bricks are quite vague all over the internet...).
Phone: Alcatel One Touch Evolve 5020t (TCT Mobile)
Android version: 4.1.2 (Jellybean)
Root access: Yes
Custom recovery: Unsure, but leaning toward no. ROM Manager said I had TWRP and CM installed, but I have never been able to boot into custom recovery mode...
Bootloader: Unsure. I believe it is locked.
OK, Here's what happened: I forgot to wipe my SD card/cache before flashing. Flashed phone, Phone rebooted to the manufacturer screen, then goes dead. Power button turns phone on but phone will not get past the manufacturer splash screen. Tried to boot in recovery mode by pressing vol up + power, the bootloader comes up, but only the options "Reboot System" and "Reboot in Recovery Mode" appear. Selecting either option results in the same thing: Phone dies after manufacturer screen.
Connected via USB:
PC will no longer recognize the device. When phone is powered on and connected, PC makes the sound for a connected device, then makes the sound it makes when you disconnect. It does this multiple times. Powered off it does the same thing. With battery removed, phone will not power on, but displays the charging battery picture.
I have read that formatting my SD card can fix this somehow, but haven't attempted it yet.
I have stock ROM image for the device. I have backups saved on the SD and my PC.
Can anyone help me?
Click to expand...
Click to collapse
hi could u send me the stock ROM image of the Alcatel One Touch Evolve 5020t ? my email is [email protected]
or u can give me the link of the rom that i can download .
Thanks !!!
i pimped my rom and got a brick
I used an app called Pimp my Rom and tweaked the cpu and kernel. It was a lot faster, however when I rebooted my phone I got a brick. I tried booting recovery and apply update from sd card. it failed with stock and rooted recovery roms. I understand the bootloader must be unlocked prior to this type of flash. Is there any other solution. I am currently without a phone!!
DEFTEK67 said:
I used an app called Pimp my Rom and tweaked the cpu and kernel. It was a lot faster, however when I rebooted my phone I got a brick. I tried booting recovery and apply update from sd card. it failed with stock and rooted recovery roms. I understand the bootloader must be unlocked prior to this type of flash. Is there any other solution. I am currently without a phone!!
Click to expand...
Click to collapse
Have you tried going to the Alcatel website and downloading the One-Touch update software package? It has worked for some people that have the 5020t variant...
can you send me the Alcatel 5020t Stock rom thaks much--- [email protected]
can you send me the Alcatel 5020t Stock rom thaks much--- [email protected]

Lenovo TAB S8-50F won't boot, help!

I'm not a n00b, I've rooted every Android device I've ever had, and I have my OnePlus Two running the latest CM14.1 nightlies. But I can not figure out what to do for this poor tablet.
I had downloaded and installed an OTA from Lenovo, but it must have been corrupt because the tablet got stuck in a boot loop. I can boot into recovery, so I tried formatting it and clearing all the caches, then it goes to a screen with a loading bar, which fills completely and just sits there. I've left the thing on all night. Nothing.
Sending it to Lenovo is a no-go because I voided the warranty when I rooted it.
I've also tried reinstalling the stock firmware, but the Intel phone flash tool either get's blocked by Windows 10 (with no way to whitelist it) or fails to flash properly.
crandroid99 said:
I'm not a n00b, I've rooted every Android device I've ever had, and I have my OnePlus Two running the latest CM14.1 nightlies. But I can not figure out what to do for this poor tablet.
I had downloaded and installed an OTA from Lenovo, but it must have been corrupt because the tablet got stuck in a boot loop. I can boot into recovery, so I tried formatting it and clearing all the caches, then it goes to a screen with a loading bar, which fills completely and just sits there. I've left the thing on all night. Nothing.
Sending it to Lenovo is a no-go because I voided the warranty when I rooted it.
I've also tried reinstalling the stock firmware, but the Intel phone flash tool either get's blocked by Windows 10 (with no way to whitelist it) or fails to flash properly.
Click to expand...
Click to collapse
What I've tried:
Just plain booting it - screen turns on and doesn't do anything, just black
Rebooting through recovery (power + vol_up) - plays boot animation, goes to a screen with a loading bar like it does after an update, but once the bar fills, a white line appears at the top of the screen and nothing happens
Downloading the official KitKat firmware (http://forum.xda-developers.com/android/help/lenovo-tab-s8-50f-stock-firmware-rom-t2989791), unarchiving the rar file and rearchiving it into a .zip, putting it on a MicroSD card, putting the card in the tablet, flashing through recovery - can't find the .zip, says SD card is blank
Clearing caches and wiping data - same as when rebooting through recovery
Using the Intel phone flash tool through bootloader (power + vol_down) - tool can't find device
Using the same tool through fastboot (power + vol_up + vol_down) - gets to the sleep 4000 ms step, reboots the device, then the device goes to the same loading screen and the flash tool can't contact it. I think it's trying to boot into the OS to finish the flash, but that's the problem to begin with
I've tried loading the temporary CWM session but that fails
I can't for the life of me figure out what the @bailka011 Unlock Tool is supposed to do or how to use it, plus the download link isn't working.
Can someone please guide my through this? I'm so confused
crandroid99 said:
What I've tried:
Just plain booting it - screen turns on and doesn't do anything, just black
Rebooting through recovery (power + vol_up) - plays boot animation, goes to a screen with a loading bar like it does after an update, but once the bar fills, a white line appears at the top of the screen and nothing happens
Downloading the official KitKat firmware (http://forum.xda-developers.com/android/help/lenovo-tab-s8-50f-stock-firmware-rom-t2989791), unarchiving the rar file and rearchiving it into a .zip, putting it on a MicroSD card, putting the card in the tablet, flashing through recovery - can't find the .zip, says SD card is blank
Clearing caches and wiping data - same as when rebooting through recovery
Using the Intel phone flash tool through bootloader (power + vol_down) - tool can't find device
Using the same tool through fastboot (power + vol_up + vol_down) - gets to the sleep 4000 ms step, reboots the device, then the device goes to the same loading screen and the flash tool can't contact it. I think it's trying to boot into the OS to finish the flash, but that's the problem to begin with
I've tried loading the temporary CWM session but that fails
I can't for the life of me figure out what the @bailka011 Unlock Tool is supposed to do or how to use it, plus the download link isn't working.
Can someone please guide my through this? I'm so confused
Click to expand...
Click to collapse
what did it says the update would do? android 6.0? latest update for this tablet was released 7 months ago... the unlock tool u mentioned unlocks the bootloader, and try to find a win7 pc to do the flashing. some users on a different forum stated that windows 10 will cause problems during flashing
good luck
xaocot said:
what did it says the update would do? android 6.0? latest update for this tablet was released 7 months ago... the unlock tool u mentioned unlocks the bootloader, and try to find a win7 pc to do the flashing. some users on a different forum stated that windows 10 will cause problems during flashing
good luck
Click to expand...
Click to collapse
This update was seven months ago. It did not claim to bring 6.0, just minor fixes.
Thank you for clearing that up, now I just have to figure out how to download and use it xD.
Also I have figured out how to enable the hidden administrator account in Win10 and use that to get around the security warning, still tries to boot partway through flashing. Unless there's some other part of Win10 that's disagreeing with it.
Sent from my ONE A2005 using Tapatalk
the same problem with me!
crandroid99 said:
What I've tried:
Just plain booting it - screen turns on and doesn't do anything, just black
Rebooting through recovery (power + vol_up) - plays boot animation, goes to a screen with a loading bar like it does after an update, but once the bar fills, a white line appears at the top of the screen and nothing happens
Downloading the official KitKat firmware (http://forum.xda-developers.com/android/help/lenovo-tab-s8-50f-stock-firmware-rom-t2989791), unarchiving the rar file and rearchiving it into a .zip, putting it on a MicroSD card, putting the card in the tablet, flashing through recovery - can't find the .zip, says SD card is blank
Clearing caches and wiping data - same as when rebooting through recovery
Using the Intel phone flash tool through bootloader (power + vol_down) - tool can't find device
Using the same tool through fastboot (power + vol_up + vol_down) - gets to the sleep 4000 ms step, reboots the device, then the device goes to the same loading screen and the flash tool can't contact it. I think it's trying to boot into the OS to finish the flash, but that's the problem to begin with
I've tried loading the temporary CWM session but that fails
I can't for the life of me figure out what the @bailka011 Unlock Tool is supposed to do or how to use it, plus the download link isn't working.
plz someone too guide me ,the same problem is happening but there is no appearance of a loading screen,when i switch on the tab ,it showws the lenova logo and goes to a black screen thats keeps on flahsing!! i dont knwo what to do ,when i connect to pc and try to flash it doesnt work,i dont what to do plz help me!!
Click to expand...
Click to collapse

Ulefone T1 Bootloop - not able to access recovery mode

Hello all,
First of all, as a disclaimer: I am a total noob in this area. I just got my Ulefone T1, and tried to root it by installing TWRP and then installing SuperSU using TWRP. When I first installed TWRP, it worked and I got into the TWRP recovery menu. However, as the phone had to be wiped, I couldn't install the SuperSU zip anymore. I did a normal reboot to transfer the SuperSU zip to my phone, but when I then tried to turn my phone off and access TWRP, it went to normal recovery mode of my phone. As I wanted to start fresh off again, I went to the settings of my phone and did a factory reset silly.
Now, it is stuck in a bootloop where I can literally do nothing. I cannot access factory mode or recovery mode, all it does is just endlessly boot and turn off. I have managed to turn it off completely, but that's all I can do. Also, the battery is not removable.
Does anyone with a little more knowledge have a suggestion for me? Thanks in advance!
As an update, I got a suggestion to fully drain the battery, but that does not work either. I have tried connecting it to my PC, which is not working, but that was acting weird before. I guess it's just not possible?
did you work this out ? i am stuck in bootloop too ??????
Daviesjosh95 said:
did you work this out ? i am stuck in bootloop too ??????
Click to expand...
Click to collapse
I have no idea what software is necessary to do it for your device but you can flash stock rom, if it uses sp tool or something then download stock rom, use sp tool to flash it. Should be OK after that. As I am not familiar with this device I can't give you any other advice other than flashing stock rom.
Any solutions to unbricking/boot looping?
Have anyone found any solutions to unbricking phone??
Mine also did bootlooping after unlocking bootloader.
I was able to flash successfully but screen fussy and unreadable and not able to touch. I am able to hear but lines are on screen.
I have same problem, please, anyone help, I think I used wrong twrp image
Ulefone T1 Bootloop solution 2019.
I was able to fix the bootloop of my ulefone t1, just flash it with sp flash tool by following this guide:
1. Download the Stock Firmware on your personal computer.
2. Install the USB MTK Drivers (skip if you have it already installed).
3. Download and Launch the Smart Phone Flash Tool (SP Flash Tool)
4. Click the Scatter-loading button to navigate to the stock Rom you just downloaded.
5. Select the Scatter File from the extracted Stock Firmware on your computer.
6. Select the Download Only in the SP flash tool option
7. Click the Download button to start the Formating process.
8. Connect your device via USB to the computer>> holding volume + and volume – button of your device at the same time or holding power button only so that the flashing process will starting working
9. Patiently wait for your device to be formatted.
10. After the formatting is done, a Big Green button will pop up on the SP Flash to show that.
11. Unplug your device and boot it up.
12. If you have a boot loop after booting your device, boot into recovery mode and do a factory reset.
13. Voila, you are all good.
Very important step 8 of the guide.

AGM A8 black screen, none ROM work

I have a big problem with my AGM A8.
The original ROM started displaying advertisements and malfunctioning so I wanted to change it.
I downloaded TWRP 3.1.0 AND- If I press the power button, or the screen will go sleep, it can not be woken up - the phone and touch works, the screen is black. When using TWRP 3.1.0 I install lineage-14.1 or RR v5.8.3, they work very well, but also - if phone will go sleep or I press the power button - I have to pull the battery out to reset and start.
I installed TWRP 3.2.3. It works very well, there are no problems with the black screen, but it do not want to install any rom (allways error 7).
I was scared, so I tried to install the original rom using an SD card (T88Q_14.bin file) and 3 buttons, but the phone does not detect it (on few different sd cards).
Please help me... I have a brick instead of a smartphone :/
I have a similar problem... As far as the SD card 3 button boot... Deep format the card before use... That worked for me.
The problem I have is:
The (T88Q_14.bin) file I have is probably for a different version and will not restore my phone correctly.
I've lost fastboot mode and recovery.
Now the phone boots with the screen scrambled with only colored lines.
It seems to boot in Android but OEM locked so I can't do anything with ADB.
I can't unlock it because I can't see anything but colors on the screen... The touch screen does not seem to work.
My AGM A8 is 4gb ram 64 rom. (The newest version)
If anyone have the T88Q_14.bin for that phone... please share
Same problem, I found this one and I am back in!!
search for LA6622(Q14)_HW1.R1.V09.A8_MultiDownload_20180411user
found link at 4pda russian, google translate.
Xda won't let me post the link.
Still have bars in the background but at least it is workingP
Sent from Mail for Windows 10
hello friends,
i did also struggle with preparing the reboot sd card for AGM A9.
in the end, my following actions were successful:
i've just formatted the tf card in android,
downloaded the zip file for my phone model
to the root directory of the tf card,
powered off the phone,
and booted by symultaneous press of [on] and [vol-dn].
i don't know whether this wipes the cache,
so if you want to make sure, reboot with [on] and [vol-dn] without the tf,
select with vol-up/dn the wipe cache option, and do it by [on/off],
and then select reboot the same way.
good luck

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