Related
I wrote this awhile back to provide known methods to enter each of these modes. I know it's rather wordy, but may help those that are newer to all this. See the link below for a more concise write-up. I'll try to keep this updated with any corrections and/or new methods and feedback is very welcome.
How To Enter APX, Fastboot Mode and Recovery menu
Special thanks goes out to tobdaryl for providing the foundation for this guide and to daws for
providing a previously unknown method (USB cable plug in while tablet is turned off).
Pertinent links:
The methods below written more concisely by tobdaryl: How to enter APX mode or Bootloader-recovery menu
Universal Naked Drivers (for APX/ADB/Fastboot modes): [ADB/FB/APX Driver] Universal Naked Driver 0.72
To install the SDK tools & drivers in Windows 7 (and other versions?): [HOWTO] Install Google SDK and ADB drivers...
The following instructions are written on how to enter APX mode. To enter Fastboot and Recovery modes, simply follow the same instructions but use the Volume Down button. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, follow the displayed instructions to enter the desired mode. Note: The screen remains blank in APX mode.
When your tablet is turned off, to enter APX mode:
Make sure your USB cable is connected to your tablet and PC. While pressing the Volume Up button, press the Power button for a few seconds, and then release both buttons.
Make sure the USB cable is not plugged into your tablet (but is connected to your PC). While pressing the Volume Up button, plug the USB cable into your tablet. Release the Volume Up button after a few seconds (modified from daws' suggested method).
When your tablet is up and running, to enter APX mode:
Turn your tablet off and wait a few seconds. Connect your USB cable to your tablet and PC. While pressing the Volume Up button, press the Power button for a few seconds, and then release both buttons.
Make sure your USB cable is connected to your tablet and PC. Open a command prompt on your PC, navigate to the folder containing adb.exe, type: adb reboot and hit the Enter key while holding down the Volume Up button until the screen remains blank for a few seconds.
From a tablet based terminal emulator, type: su and hit the Enter key, then type: reboot and hit the Enter key while holding down the Volume Up button until the screen remains blank for a few seconds. One suggested app (by tobdaryl) is the free Android Terminal Emulator from Google Play. Note: You must be rooted for this to work.
Press the tablet reset with a paperclip while pressing the Volume Up button until the screen remains blank for a few seconds (the reset is located about either 25mm or 1" below the sdcard slot). Note: Do not press hard!
When your tablet is in Fastboot mode, to enter APX mode:
While pressing the Volume Up button, press the Power button for 10 seconds. Release both buttons a few seconds after the screen goes blank. One variation is to wait and press the Volume Up button immediately after the screen goes blank and then release it after a few seconds. If you wait too long to press the Volume Up button, your tablet will just boot up normally.
Make sure your tablet has the USB cable connected to your PC. Open a command prompt on your PC, navigate to the folder containing fastboot.exe, type: fastboot -i 0x0B05 reboot and hit the Enter key while holding down the Volume Up button until the screen remains blank for a few seconds. One variation is to wait and press the Volume Up button immediately after the screen goes blank and then release it after a few seconds. If you wait too long to press the Volume Up button, your tablet will just boot up normally. Note: Newer versions of fastboot.exe do not require the "-i 0x0B05" option.
Or, as a last resort!
Remove your tablet's cover, disconnect the battery, press and hold the volume up button, and reconnect the battery!
The following instructions are written on how to switch from one mode to another (not covered above).
When your tablet is up and running, to enter Fastboot or Recovery mode:
Make sure your USB cable is connected to your tablet and PC. Open a command prompt on your PC, navigate to the folder containing adb.exe, type: adb reboot-bootloader and hit the Enter key. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, follow the displayed instructions to enter the desired mode. Note: I was unable to verify this method possibly due to having the AndroidRoot.mobi custom bootloader. This method only performs a regular reboot for me.
From a tablet based terminal emulator, type: su and hit the Enter key, then type: reboot bootloader and hit the Enter key. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, follow the displayed instructions to enter the desired mode. One suggested app (by tobdaryl) is the free Android Terminal Emulator from Google Play. Note: You must be rooted for this to work, Note2: I was unable to verify this method possibly due to having the AndroidRoot.mobi custom bootloader. This method only performs a regular reboot for me.
When your tablet is in APX mode, to enter Fastboot or Recovery mode:
While pressing the Volume Down button, press the Power button for 10 seconds. Release both buttons a few seconds after the screen goes blank. One variation is to wait and press the Volume Up button immediately after the screen goes blank and then release it after a few seconds. If you wait too long to press the Volume Up button, your tablet will just boot up normally. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, follow the displayed instructions to enter the desired mode.
When your tablet is in Fastboot mode, to enter Recovery mode:
Make sure your tablet has the USB cable connected to your PC. Open a command prompt on your PC, navigate to the folder containing fastboot.exe, type: fastboot -i 0x0B05 reboot-bootloader and hit the Enter key. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, press the Volume Up button within 5 seconds. Note: Newer versions of fastboot.exe do not require the "-i 0x0B05" option, Note2: I was unable to verify this method possibly due to having the AndroidRoot.mobi custom bootloader. This method only performs a regular reboot for me.
When your tablet is in Recovery mode (TWRP v2.3.x), to enter Fastboot mode:
Select the "Reboot" option and then select the "System" option while pressing the Volume Down button until the screen remains blank for a few seconds. Once the message: "Checking for RCK.. press key <Vol_Up> in 5 sec to enter RCK" is displayed, wait 5 seconds for the icons to appear, and follow the instructions to select/confirm fastboot mode. One variation is to wait and press the Volume Down button immediately after the screen goes blank and then release it after a few seconds. If you wait too long to press the Volume Down button, your tablet will just boot up normally.
When your tablet is in Recovery mode (TWRP v2.3.x), to enter APX mode:
Select the "Reboot" option and then select the "System" option while holding down the Volume Up button until the screen remains blank for a few seconds. One variation is to wait and press the Volume Up button immediately after the screen goes blank and then release it after a few seconds. If you wait too long to press the Volume Up button, your tablet will just boot up normally.
Nice guide! Thanks for taking the time to gather the information and create this guide.
It is clear, detailed, and easy to follow.
It should be a stickied.
Hi I tried connecting my device to my computer after holding down the buttons to get into APX mode. And after about 5 seconds I heard a connection sound then Windows told me the USB device malfuntioned. Any idea why?? I'm trying to fixed my friend's soft bricked tablet which cannot get into fastboot mode.
firtvid20 said:
Hi I tried connecting my device to my computer after holding down the buttons to get into APX mode. And after about 5 seconds I heard a connection sound then Windows told me the USB device malfuntioned. Any idea why?? I'm trying to fixed my friend's soft bricked tablet which cannot get into fastboot mode.
Click to expand...
Click to collapse
A couple of quick thoughts if it's not the device itself: check to make sure the cable is good, try a different USB port, and try re-installing the drivers (using the Universal Naked drivers, specifically the APX one included in the package). I've had troubles on one pc where it would connect and disconnect - it was either the USB port acting flaky or the OEM cable I was using...
Watching Windows device manager, is it showing it as an APX device or something else before it disconnects? Also, what kind of error?
Hopefully some others may have added suggestions...good luck!
wha2do said:
A couple of quick thoughts if it's not the device itself: check to make sure the cable is good, try a different USB port, and try re-installing the drivers (using the Universal Naked drivers, specifically the APX one included in the package). I've had troubles on one pc where it would connect and disconnect - it was either the USB port acting flaky or the OEM cable I was using...
Watching Windows device manager, is it showing it as an APX device or something else before it disconnects? Also, what kind of error?
Hopefully some others may have added suggestions...good luck!
Click to expand...
Click to collapse
Ah I seemed to fix it when I held down the volume button while the tablet was off and plugged it in. Thanks for the help!
firtvid20 said:
Ah I seemed to fix it when I held down the volume button while the tablet was off and plugged it in. Thanks for the help!
Click to expand...
Click to collapse
No problem at all and glad to hear it wasn't a complicated fix! With APX and other modes, do have the two methods. Holding both buttons at same time, but I do find somehow it doesn't always recognize them (maybe I'm not holding the volume button solidly?). As worked for you, the other option is to have it powered off, hold the volume button, and then plugging it in to get it to power on and go into APX mode (remembering it's just a black screen but can tell by checking Windows device manager - mostly mentioned for any others that may come across this!).
If have more questions on the rest of the restore process, might be good to start a fresh post for the remaining steps. Good luck with getting it back up and going!
Hi @wha2do,
This morning I followed a guide written years ago instructing "-i 0x0B05" as part of a fastboot flash, which was a problem considering I used the latest fastboot available ...
Thanks to your guide, I removed that portion and it worked like a charm. Thank you man
cristobal.digital said:
Hi @wha2do,
This morning I followed a guide written years ago instructing "-i 0x0B05" as part of a fastboot flash, which was a problem considering I used the latest fastboot available ...
Thanks to your guide, I removed that portion and it worked like a charm. Thank you man
Click to expand...
Click to collapse
Whew, it hit me how long ago that was posted, but glad to hear it helped! I def appreciate the post
I went through a lot of searching and trouble to install CM11 on my Xperia Tablet Z, and I'd like to share a tutorial I made for anyone who is also wanting to accomplish this.
All links are in Dark Green because I cannot post links yet.
1. Download and extract the ADB+Fastboot+Drivers zip (alexpja.com/sony/adb-fastboot-win.zip)
2. Now we’ll unlock the bootloader.
a. If you do not have a Phone app (like I don’t on the SGP351), you can either get the IMEI from About -> Status in the settings OR you can find the IMEI right after the IC code, nearby the barcode on the bottom of the tablet.
b. If you do have a Phone app, enter *#06# to retrieve the IMEI.
c. Save this for later use.3. Place the tablet into fastboot mode and connect it to the computer.
a. Power off the device
b. Connect USB to computer
c. While plugging in the other side of the USB cable into the tablet, hold down the Vol + button.
d. If your speakers are on, you should a sound.
e. We have to install the drivers for fastboot. Open devmgmt.msc via the Run window or in the Start menu and in Other Devices section, you should see S1 Service or S1 Fastboot (anything containing S1).
i. If it is showing a yellow exclamation mark: Follow 3.e.i.1. If it is not, continue to 3.f.
1. We need to download Flashtool and use the driver setup. Download Flashtool (unrestrict.li/flashtool) and install it.
2. Find cmd.exe, right click it, and select Run as administrator.
a. Type in
Code:
bcdedit /set testsigning on
and press enter.
b. Reboot your computer.3. Once you have rebooted the computer, open the folder where you installed Flashtool (default: C:\Flashtool).
4. Open up the drivers folder and open Flashtool-drivers.exe.
5. Select the first two driver choices (Flashmode and Fastboot) and select “Xperia Tablet Z Drivers” and continue.
6. A new window will appear, continue on with that.
7. A window like this may appear a few times, just press Install this driver software anyway.
8. Run 3.e.2. again and run
Code:
bcdedit /set testsigning off
. Reboot your PC now or after the tutorial.f. The LED pulse light above it should be emitting a blue-ish color. The screen will be dark.4. Now we’ll verify if you have fastboot running.
a. Open the tools folder that was extracted from the ADB ZIP and double-click on START.cmd to open Command Prompt in the current directory (all it does is literally open cmd.exe, you can edit the script to verify).
b. Run the command
Code:
fastboot -i 0x0fce getvar version
. If you get
Code:
<waiting for device>
, then you did something wrong. Retrace your steps! (For example, I get
Code:
version: 0.5
)5. Go to (unlockbootloader.sonymobile.com) and continue until you reach the screen where you put type in the IMEI and an email address. Type in the first 14 digits of the IMEI (remove the last one) and your email address (not sure if name is required). You should get an email instantly with the key.
6. In the Command Prompt, run
Code:
fastboot -i 0x0fce oem unlock 0xKEY
where KEY is the key you received in the email from Sony.
7. Download whatever release you would like to use on the tablet (I’m using CM 11 nightly) from (download.cyanogenmod.org/?device=pollux)
a. Optional: Also download gapps for Google apps such as Gmail, Google Play Services, etc. (wiki.cyanogenmod.org/w/Google_Apps)8. Extract the ZIP file (but don’t delete it either) and copy boot.img to the tools folder.
9. If your device is still turned off, turn it on and enable USB storage mode. Copy the CM zip to either the internal storage (sdcard) or, if one is inserted, the microSD card (sdcard1).
10. Place it into fastboot mode again (#3).
11. Go back into the Command Prompt and enter:
a.
Code:
fastboot -i 0xfce flash boot boot.img
b.
Code:
fastboot -i 0xfce reboot
c. Enter recovery.
1. Once it shuts down, rapidly tap the Vol + button in order to get into the recovery.
2. Grep_The_Truth's tip: Look at the LED. It will turn orange and afterwards it'll turn purple. You want to press Vol+ as soon as it changes colors.12. Select “wipe data/factory reset” and wipe it. Afterwards, go back to main menu.
13. Select “Install zip” and either select “Choose zip from /sdcard” (internal storage) or “Choose zip from /storage/sdcard1” (microSD card).
I’ve had varying experience with installing from the /sdcard because sometimes it doesn’t want to mount /data while wiping (/data/media which is /sdcard is safe in wipe) the tablet, so if you were to install the zip from /sdcard with the error present, it would screw things up. I prefer the microSD card route (/storage/sdcard1), and you don’t even need a big one. 512MB works just fine. The actual path would be /sdcard/0/ when looking for the cm.zip in the internal storage.
14. When you have chosen to install from either /sdcard or /storage/sdcard1, select the cm.zip and install it.
a. If you downloaded gapps.zip, install it the same way as you did with the cm.zip.15. Go back to the main menu now and select “reboot system now”
a. Once, I had the option to install root access before rebooting, I declined (was planning on rooting after tutorial) but it gave me root anyway.
That’s it! You can now use CyanogenMod with the Sony Xperia Tablet Z.
Getting in to recopvery
I just struggled with entering recovery for way too long and I want to help others avoid this. I kept finding vague instructions.
The step I want to clarify is:
c. Once it shuts down, rapidly tap the
Code:
Vol +
button in order to get into the recovery.
Click to expand...
Click to collapse
This didn't work for me because if you press Vol+ too soon it goes right back in to fastboot mode. If you press it too late you will miss the recovery mode. You only have to press Vol+ once.
Please change step c. to read:
Look at the LED. It will turn Orange and then Purple. You want to press Vol+ as soon as it changes from Orange to Purple to enter recovery mode.
Grep_The_Truth said:
I just struggled with entering recovery for way too long and I want to help others avoid this. I kept finding vague instructions.
The step I want to clarify is:
This didn't work for me because if you press Vol+ too soon it goes right back in to fastboot mode. If you press it too late you will miss the recovery mode. You only have to press Vol+ once.
Please change step c. to read:
Look at the LED. It will turn Orange and then Purple. You want to press Vol+ as soon as it changes from Orange to Purple to enter recovery mode.
Click to expand...
Click to collapse
I'll add it along with mine, because I can do it with no problem.
alexpja said:
I'll add it along with mine, because I can do it with no problem.
Click to expand...
Click to collapse
alexpja Thanks for your tutorial, this is very detailed and easy to follow.
my Xperia is SGP321.
I put it into practice and the results it gives me the "oem unlock" is:
FAILED: (remote: Command nor allowed).
I guess you should treat my tablet has the bootloader locked and not allowed (for now??) the unlocked.
I hope someone gives us the opportunity to unlock the devices and in the future can be unlocked.
I had the same experience where at times the steps were a little confusing, especially for a beginner. Each set of instructions would either leave something out or skim over it as if everyone already knew it. That's understandable since they were probably written for that audience. I soft-bricked my SGP311 at least 10 times.
I was even going to write something like this but I got lazy.
One suggestion I would offer is to request the bootloader unlock key first since it sometimes takes a little while and a person can reduce the possibility of having to stop and wait just when they are making progress.
And for anyone going this route for the first time, don't make my mistake - flash exactly what the instructions say to flash, particularly boot.img. Once you have that recovery flashed you have a lot more control over your device. If something goes wrong in a following step like getting boot loops you can still fix it. But if you get annoyed and start poking at it then you can mess up the recovery. Then you have to reset everything to stock and just about start over.
While I don't want to say something stupid like claiming the tablet is indestructible, I found that whether I got stuck in a boot loop I couldn't get out of or screwed it up so bad that all I could get from the tablet was an occasional LED flash, I could always restore it using Emma. It's annoying to have to start all over but it's a huge relief when it boots normally.
for me flashing was fine and without any error but my Tab doesn't boot up with CM flashed...any idea?
Hanging at reboot
Hi.
I tried this procedure on my sony xperia tablet z 311. It unlocked fine and wrote boot.img fine but on reboot command, I get a red light and it hangs there.
I've managed to get it back to fastboot mode (pressing power and vol+, some white blinking lights).
But that's it, that's all I can do with this right now. It's a brick that can get into fastboot mode and that's it. Any time I write a boot.img (have tried a different one also), it writes fine but hangs with a red light at reboot.
Edit:
Used Sony's Emma in flash mode to get back to stock, tried again and it worked.
Maybe the problem was using the pollux instead of pollux_windy download, my bad.
Guess my bootloader won't be unlocked. This is A lot of work. Good job on the write up though maybe one day I'll tackle it.
BOOT LOOP Step 9
All was going well, but step 9 powering on device, now its looping.....Ill use flash tools to put jelly bean on and try again, since i was trying with kitkat...why i suspect kitkat is the issue, before i used to be able to unlock and lock boot-loader with jelly bean but with kitkat it didn't work, which i then forced it via cmd
No GPS
I used the tutorial for my Pollux Windy (WiFi Only) and used the latest nightly. everything went well but my GPS is now broken. Is this a known issue?
kevinsickles said:
Is this a known issue?
Click to expand...
Click to collapse
yep! use search to find out more.
mulebreath said:
Hi.
I tried this procedure on my sony xperia tablet z 311. It unlocked fine and wrote boot.img fine but on reboot command, I get a red light and it hangs there.
I've managed to get it back to fastboot mode (pressing power and vol+, some white blinking lights).
But that's it, that's all I can do with this right now. It's a brick that can get into fastboot mode and that's it. Any time I write a boot.img (have tried a different one also), it writes fine but hangs with a red light at reboot.
Edit:
Used Sony's Emma in flash mode to get back to stock, tried again and it worked.
Maybe the problem was using the pollux instead of pollux_windy download, my bad.
Click to expand...
Click to collapse
Hi,
I've been trying with my Xperia Tablet Z Wi-Fi SGP311. Ran into the same problem. On reboot command the LED was stuck on red for 10 minutes and the cmd window was still open. I unplugged the USB and the LED would not turn off. Tried some things, I don't remember specifically what, but it got the LED to turn off. Now my device can't be detected. I've downloaded Emma and it is not recognising my tablet. I've tried to plug the USB in while hold Vol +, Vol -, and the Power button. No detection for any. All I can do with my tablet is make the LED flash white, purple and red in rapid succession by holding Vol + and Power for 5 seconds.
Anyone know what's happened? I suspect I've completely bricked it :L
EDIT: Apparently there are different modes which you can cycle through. If you hold down Vol + and Power for 5 seconds, the LED will flash according to which mode the tablet is in. The different modes give these flashes:
- 1 White flash
- 3 Rapid which flashes
- A white, purple and red flash in quick succession
To switch between the modes, I hold down Vol+ and Power, and after 5 seconds it will take around 3 more seconds to change modes. One of these modes will not appear unless plugged into a PC. What do these mean and can I do anything with it? Tablet is still bricked.
EDIT2: I've managed to get Emma to recognise my tablet. Turns out the modes do have different purposes. I should be fine now, problem solved. I will just leave the solution here in case anyone runs into the same problem.
Unplug your device and hold Vol + and Power for 10 seconds. At the 5 second mark your LED should flash white ONCE. Keep both buttons held and within 5 more seconds, your LED will flash white THREE times consecutively. This will allow you to enter Flashmode (plug in USB while holding Vol -) and Fastboot (plug in USB while holding Vol +). For Emma to recognise your device, enter Flashmode and you can restore and try again.
Bootloop
I've tried many times to flash cyanogenmod onto my Xperia Tablet Z (SGP311). This is a Wi-Fi only tablet and I have downloaded the versions of CM from (download.cyanogenmod.org/?device=pollux_windy) I've followed all of the steps and tried all of the versions of CM down to 10.2 (I used GApps10.2 for CM10.2). Each version gets stuck in bootloop. I've cleared all data (in CWM - wipe data/factory reset, wipe cache partition, wipe delvik cache) before flashing CM and GApps; however, when I try to clear data I get an error. This is what the tablet says:
-- Wiping Data...
Formatting /data...
Error mounting /data!
Skipping format...
Formatting /cacha
Formatting /sd-ext...
Formatting /sdcard/.android_secure!
Skiiping format...
Data wipe complete.
Click to expand...
Click to collapse
I'm thinking the "Error mounting /data" is the problem, but I'm not entirely sure, nor am I sure of how to fix it.
Any suggestions?
EDIT: Turns out I'm just really bad with Android stuff. I ended up flashing the original Xperia software, unlocking the bootloader (according to this tutorial's instructions), then I downgraded to 4.1.2, rooted my tablet (forum.xda-developers.com/showpost.php?p=53063218&postcount=14) and installed the PhilZ and TWRP custom recoveries. I didn't get to use them in the end. For some reason CWM kept coming up no matter what combination of buttons I pressed while rebooting. After downgrading and rebooting, I followed the rest of the instructions on this tutorial (from step 7). This time I got no errors while cleaning the disk, cache and delvik cache. Flashed the zip files, rebooted the device and voila, Cyanogenmod11!
Again, I'll leave this edit here in case someone runs into a similar problem. I couldn't get any version of CM until I rooted first.
I followed this guide and bricked my device. If anyone has any tips - PLEASE HELP!
I tried to flash CM11, all seemed to be going great until CM11 and Gapps where installed any I hit "Reboot system now" in CVM. The device never booted again (I which I knew why!), and is now pretty much dead. I can however:
- Enter Flashmode
- Enter Fastboot mode
- Relock/Unlock bootloader
- Emma recognizes my device just fine in flashmode.
So I still think there is some hope, right?
I have tried installing the firmware that Emma suggests, doesn't work.
I have tried flashing a firmware I found on the internet with Flashtool, doesn't work.
I have tried relocking the bootloader and trying to repair the device through SUS, doesn't work.
So, PLEASE, help my sort this out! I would be forever greatful!
tp_88 said:
I followed this guide and bricked my device. If anyone has any tips - PLEASE HELP!
I tried to flash CM11, all seemed to be going great until CM11 and Gapps where installed any I hit "Reboot system now" in CVM. The device never booted again (I which I knew why!), and is now pretty much dead. I can however:
- Enter Flashmode
- Enter Fastboot mode
- Relock/Unlock bootloader
- Emma recognizes my device just fine in flashmode.
So I still think there is some hope, right?
I have tried installing the firmware that Emma suggests, doesn't work.
I have tried flashing a firmware I found on the internet with Flashtool, doesn't work.
I have tried relocking the bootloader and trying to repair the device through SUS, doesn't work.
So, PLEASE, help my sort this out! I would be forever greatful!
Click to expand...
Click to collapse
download a proper stock (not bricked) firmware for your device and flash with flashtool.
Rootk1t said:
download a proper stock (not bricked) firmware for your device and flash with flashtool.
Click to expand...
Click to collapse
What makes you think that the stock firmwares I've tried are bricked? I've since my post tried one which I downloaded through Flashtool - same result.
This is a guide to revert your phone to a stock rom and recovery from a custom rom
Disclaimar: I have tested this process on my phone and its working perfectly. However, please proceed at your own risk. Neither me nor my cat will be responsible if anything happens to your phone or if a nuclear war starts because of the steps in this guide/tutorial.
Carry out each steps carefully and in order.
Steps-
1)Download the following file, extract it and install the drivers and PDANet from subfolder number 1-
https://onedrive.live.com/redir.aspx?cid=a8c496f804111624&resid=A8C496F804111624!793&parId=A8C496F804111624!788&authkey=!ALSImEVdBsmkGk4&ithint=file,rar
2) Download the offline update package from here and rename it as update-
http://g3.letv.cn/194/1/65/letv-hdt...1S-5.5.012S.zip?b=123456&platid=5&splatid=500
3) Place the offline update package at the root of your internal memory. Make sure the name is update and nothing else
4) Enable USB debugging-
Open Settings > About Phone Then tap “Build number” seven times to enable Developer options. ... Go back to Settings menu and now you'll be able to see “Developer options” there. Tap it and turn on USB Debugging from the menu on the next screen.
5) Connect the phone with the computer using a USB cable and wait till the drivers get installed.
6) Lock bootloader-
Open the folder (vishal1286) you downloaded and go to folder 3 > adb. On the computer keyboard press & hold the shift key and right click on the mouse. Now click on "open command window here". In the command window type- adb reboot bootloader Once the phone boots into the bootloader mode, type- fastboot oem lock. Wait for sometime and press the Volume Up button once. Your bootloader will be locked now. Now switch off your phone by pressing and holding the power button of the phone for ten seconds. (Repeat this process of switching off your phone if it powers back on.) Remove the USB cable from the phone.
7) Select scatter file-
Open the folder (vishal1286) you downloaded, go to folder 3 > SP-Flash-Tool-v5.1532.00 and double-click on flash_tool.exe
8) Select scatter file- Click on Scatter-loading and select the scatter file from subfolder 2.
9) Select Userdata.img-
Untick recovery from the populated list below and make sure userdata is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup. Remove the USB cable from the phone.
10) Select recovery.img-
Untick userdata from the populated list below and make sure recovery is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup.
11) Flashing stock rom-
Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Update System" and uncheck Clear Data. (If you get a warning click on OK.) Now click on start. The flashing of stock rom will start.
12) Additional Step-
If you are coming from an another rom or if you want a clean phone, its better you do a factory reset. Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Clear Data" and uncheck Update System. (If you get a warning click on OK.) Now click on start. Once its reset. Click on restart. Dats it.
Credits: naeem210 from Letv India Forum
vishal1286 said:
This is a guide to revert your phone to a stock rom and recovery from a custom rom
Disclaimar: I have tested this process on my phone and its working perfectly. However, please proceed at your own risk. Neither me nor my cat will be responsible if anything happens to your phone or if a nuclear war starts because of the steps in this guide/tutorial.
Carry out each steps carefully and in order.
Steps-
1)Download the following file, extract it and install the drivers and PDANet from subfolder number 1-
https://onedrive.live.com/redir.aspx?cid=a8c496f804111624&resid=A8C496F804111624!793&parId=A8C496F804111624!788&authkey=!ALSImEVdBsmkGk4&ithint=file,rar
2) Download the offline update package from here and rename it as update-
http://g3.letv.cn/194/1/65/letv-hdt...1S-5.5.012S.zip?b=123456&platid=5&splatid=500
3) Place the offline update package at the root of your internal memory. Make sure the name is update and nothing else
4) Enable USB debugging-
Open Settings > About Phone Then tap “Build number” seven times to enable Developer options. ... Go back to Settings menu and now you'll be able to see “Developer options” there. Tap it and turn on USB Debugging from the menu on the next screen.
5) Connect the phone with the computer using a USB cable and wait till the drivers get installed.
6) Lock bootloader-
Open the folder (vishal1286) you downloaded and go to folder 3 > adb. On the computer keyboard press & hold the shift key and right click on the mouse. Now click on "open command window here". In the command window type- adb reboot bootloader Once the phone boots into the bootloader mode, type- fastboot oem lock. Wait for sometime and press the Volume Up button once. Your bootloader will be locked now. Now switch off your phone by pressing and holding the power button of the phone for ten seconds. (Repeat this process of switching off your phone if it powers back on.) Remove the USB cable from the phone.
7) Select scatter file-
Open the folder (vishal1286) you downloaded, go to folder 3 > SP-Flash-Tool-v5.1532.00 and double-click on flash_tool.exe
8) Select scatter file- Click on Scatter-loading and select the scatter file from subfolder 2.
9) Select Userdata.img-
Untick recovery from the populated list below and make sure userdata is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup. Remove the USB cable from the phone.
10) Select recovery.img-
Untick userdata from the populated list below and make sure recovery is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup.
11) Flashing stock rom-
Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Update System" and uncheck Clear Data. (If you get a warning click on OK.) Now click on start. The flashing of stock rom will start.
12) Additional Step-
If you are coming from an another rom or if you want a clean phone, its better you do a factory reset. Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Clear Data" and uncheck Update System. (If you get a warning click on OK.) Now click on start. Once its reset. Click on restart. Dats it.
Credits: naeem210 from Letv India Forum
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Closed pe5r OPs request
was trying to root my lg stylo 2 Walmart family mobile(t-mobile) and i unlocked the bootloader and installed twrp but it just says no command when i boot into recovery.
Then you didn't flash the recovery properly, it's fairly simple. If you're able to get fastboot (shut off the phone totally, hold Volume Down and plug in the USB cable attached to a computer, it should go into fastboot mode almost instantly, if not then there's an issue someplace).
After that using fastboot with the recovery img file for TWRP:
Code:
fastboot flash recovery (recovery_file).img
Wait, if it says flashing successful then before you do anything else, type the following:
Code:
fastboot reboot (but do NOT press Enter yet)
Get the phone in your hand, still connected to the USB cable, and get your fingers on the Volume Down + Power button but don't put them just yet. Carefully tap the Enter key with a pinky or something to trigger the device reboot, press and hold Volume Down + Power till you see the LG logo, let Power go for a split second (still holding Volume Down) then press Power again and hold it till TWRP loads.
If that doesn't work - and I've done that hundreds of times - there's something going on with your device, perhaps the bootloader isn't truly unlocked - that checkbox in Developer Options doesn't mean it's unlocked, it just means it can be.
Ensure you followed this: https://docs.google.com/document/d/1xRfGs-w2R_54IB8cVtIj3FTmm5GY0W1Yv4SqDhVHZ-Q/edit?usp=sharing
there's a video tutorial floating around here somwhere
LG G6 H871 unrooted
I just can't get into fastboot or recovery mode. I've tried everything on the internet.
I've tried turning off the phone. Holding down the volume down button and then plugging in the USB cable.
I've tried adb command "adb reboot bootloader" which just reboots the phone until I can see the "enter your PIN" screen
The closest I got to the recovery mode was using "adb reboot recovery" which gave me the "no command" screen.
Any tips on this?
Have you enabled OEM Unlock option under Developer settings?
Yes. "Enable OEM unlock" and "USB debugging" enabled.
both oem unlock is on and usb debugging on and my computer has accepted the fingerprint from teh device to shake with adb. . still cant get into fastboot mode.what to do.
Is your phone rooted? If so use flashify to reflash recovery. You do know that if you want to boot in recover you have to let the power key go and repress it once your screen goes on right?
You can also try phone off. Holding volume up while you insert usb cable. Might be a tool that allows a command to be send to reboot it in fastboot mode? If not downgrade its firmware..
ErlendAnderson said:
LG G6 H871 unrooted
I just can't get into fastboot or recovery mode. I've tried everything on the internet.
I've tried turning off the phone. Holding down the volume down button and then plugging in the USB cable.
I've tried adb command "adb reboot bootloader" which just reboots the phone until I can see the "enter your PIN" screen
The closest I got to the recovery mode was using "adb reboot recovery" which gave me the "no command" screen.
Any tips on this?
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If I understand correctly, when you got to the No Command" screen, you were actually in Recovery. From my experience, the No Command screen is like a "greeting", if you will. Once you see that screen, you need to fiddle with the power & volume buttons. I believe the correct combination is to press and hold the power button. Then press and release the volume up button but continue to hold power button. If that is not the correct sequence you will need to Google for the correct order. Reference.
Considering that you are not rooted, there is not much you can do in the stock recovery.
EDIT 2 - Realized that this thread is over a year old and the OP has probably moved on. Didn't realize another member revived it. Sorry.