Overview
Many people asked me on telegram how they can unlock their bootloader and flash TWRP, as obvious I helped them but then again few people asked me... I was wondering telling entire steps again and again will waste a lot of time so I decided why not on xda-developers?
So here it is presenting a "Noob way to unlock boot-loader, flash recovery" :laugh:
Disclaimer
]Of course there is a risk of doing anything so I won't take any responsibly of fixing it !! Please do some research if you are not aware of anything. Warranty will be voilà so you won't be able to claim any service repairs for free. Please proceed at your own risk :angel: However, if you follow everything carefully you won't be able to stick into anything.
Click to expand...
Click to collapse
Downloads1. ADB Driver 1
2. ADB Driver 2
3. Windows 10 Updater
4. ADB Toolkit
5. TWRP
InstallationsNow it's not hard but still like a manual, I have added this. To install the drivers first and most important is to update Windows to its latest release. Extract .rar/.zip files downloaded from the above download section and go to the ADB Driver 1 & 2 folder and look if there is an executable file like .exe/.bat if yes then run it as admin and all set if there isn't then you may see a setup information well simple look for a file ends with .inf extension. If you find such a file then simply open device manager and click on your PC name for e.g my PC name is MINIX and then click on action tab select add hardware legacy --> Next --> Search and install automatically --> Next --> Show all --> Next --> Have Disk --> Browse and then go to the folder where the .inf/setup information file is located click on it --> Next and then it may pop up something like driver signature verification failed for it just move HERE All set ! But I would suggest to do a windows update check again for proper installing of drivers and then restart.
ProcessNow it's not rocket science! Let's begin!
* Update your phone to latest firmware S232 (Necessary)
* Open ADB Folder
* Copy Downloaded TWRP to ADB folder
* Rename TWRP image to recovery.img
* Move to your mobile turn on USB debugging and OEM unlocking (These options are there in developer option)
* Connect USB (Will pop up some prompt, allow for this pc if still not then revoke USB permission and check back! )
* Run .bat file called as unlock_recovery.bat
----------(Your Phone will reboot into fast boot mode and will start Unlocking process just hit volume up key on your phone when you see a prompt written in small letters)---------
* Now open the cmd/PowerShell in ADB folder itself for that hold shift key and right click will see a prompt with PowerShell/cmd click on that if still confused the go-to address bar and type cmd there. That's its!
* Type the commands one by one has listed :
Code:
fastboot devices
fast boot flash recovery
Now its important that you reboot into recovery for the first time just after recovery flash or else you will need to do entire process again … Now to boot into recovery you will have to hold power key & both volume keys at a time until you see Lenovo logo, then release the power key and volume keys. After the TWRP logo, it will take some time! So wait, but if not boot into recovery do all the process again !
Cheers :good: you have successfully installed TWRP now ! If still not then don't worry drop a replay below so that we can assist you I don't want to make money from this so no donations but still if you want to appreciate my work just hit the small button of :good: That's more than enough for me
Q/A
Q.1 My TWRP is removed after I booted back into the system, now what can I do?
A.1 Well, This is a normal thing caused due to a backup made by system of stock recover and you will have to delete it in order to fully use TWRP for that process is simple to download Aroma File Manager Flash this zip into TWRP recovery and you will see a file manager locate to system folder and in that look for a file called as recovery-from-boot.p and delete this file only /-
Q.2 My device is rebooting into TWRP only, what to do?
A.2 Now answer is not that simple you will have to download the stock ROM and flash it via SP Flash Tool that's the only option. We are looking into the issue and will find the resolution ASAP.
For more Q/A just drop a comment below and we will try to solve it! And if the issue is common we will add it to this post
We know how important it is for you to get your issue fixed but there are certain rules you will have to follow, please read them so we can assist you further!
1. Don't use bad words
2. There is a pattern you will have to follow so that we can fix it or else it may get neglected
ROM: XYZ
Root Status: N/A
Recovery Version: XYZ
Issue: XYZ (Please use a short and effective description of your problem, Don't make it too long also before you post make sure it's not there in Q/A post.)
Click to expand...
Click to collapse
For more better rectification you can add a screenshot of your issue/error.
For additional help you can reach us at :
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Telegram Group
Hello folks, for redwolf recovery process remains the same, thread
But yea, the name of recovery is redwolf.img whereas for twrp its something else so just use this code
Code:
fastboot flash recovery redwolf.img
@reserved
link is broken
Hello everyone I need a favor from a person who has unlocked bootloader can you help
---------- Post added at 04:21 AM ---------- Previous post was at 04:19 AM ----------
I need some files from you pls please please please please
Related
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Updated 11-17-12: Now that we have a stable CWMR image thanks to damien667 this procedure should be a lot less risky and less stressful!
This is confirmed working but due to the procedure involved is risky! The standard XDA disclaimer applies: I take no responsibility for bricked devices due to the following rooting procedure, no warranty express or implied is given, I will not be held responsible if you mess up your tablet by following this procedure!
You must unlock the bootloader before performing this procedure!
Credits: Kidgoo for testing and coming up with the method, thanks to damien667 for the fixed CWM images, and Chainfire for the SuperSu zip and binaries!
Before you begin make sure you read and reread the procedure and fully understand the directions.
1. Download the CWM-SuperSU-v0.98.zip
2. Download damien667's fixed CWMR 6.0.1.6 touch version of from here
3. Connect the Nexus 10 to your computer
4. Flash the CWMR image you downloaded in step 2 using fastboot
Code:
fastboot flash recovery /path/to/<recovery>.img
fastboot reboot
5. Touch "Install from SD Card" in CWMR
6. Select CWM-SuperSU-v0.98.zip that was downloaded in step 1
7. Let CWM-SuperSU-v0.98.zip install
8. Select "Reboot System"
9. Enjoy your rooted Nexus 10 !
To keep your custom recovery installed permanently and not get overwritten by the stock recovery when your reboot your tablet delete the following:
Code:
/system/etc/install-recovery.sh
/system/recovery-from-boot.p
Reserved
works! thank you very much!
Awesome!
Now, if only we could code it so it does it all for us!
1-click and go! Im afraid ill fat finger something and have a $550 paper weight :'(
Thanks for the write up!
WannaB101 said:
Now, if only we could code it so it does it all for us!
1-click and go! Im afraid ill fat finger something and have a $550 paper weight :'(
Thanks for the write up!
Click to expand...
Click to collapse
One-Klick CWM Tounch + SuperSU would be great!!! :good::good::good:
So what am I supposed to do if ADB doesn't recognize the "sideload" command?
gravis86 said:
So what am I supposed to do if ADB doesn't recognize the "sideload" command?
Click to expand...
Click to collapse
You will need to download the latest vesion of ADB included in the Android SDK, which can be found here.
Perhaps a video?
Perhaps you could provide a video to help us along?
shimp208 said:
You will need to download the latest vesion of ADB included in the Android SDK, which can be found here.
Click to expand...
Click to collapse
Yep, my ADB was out of date... Thanks!
Got the latest version of ADB?
With regard to downloading the CWM-SuperSU file (for sideloading) do you mean that it should be downloaded on the tab itself, or downloaded into the same folder as adb and fastboot?
WannaB101 said:
Perhaps you could provide a video to help us along?
Click to expand...
Click to collapse
If my Nexus 10 had arrived yet then I would be more then happy to post a video until then you'll have to make due with the written guide I'm afraid . But if you or any one else has any questions regarding the procedure feel free to ask!
shimp208 said:
If my Nexus 10 had arrived yet then I would be more then happy to post a video until then you'll have to make due with the written guide I'm afraid . But if you or any one else has any questions regarding the procedure feel free to ask!
Click to expand...
Click to collapse
I hit ya with a question above...
joeski27 said:
With regard to downloading the CWM-SuperSU file (for sideloading) do you mean that it should be downloaded on the tab itself, or downloaded into the same folder as adb and fastboot?
Click to expand...
Click to collapse
If you download it on your tablet you'll need to then place the downloaded zip on the root of the internal storage (I.E not in a folder). Alternatively you can download it using a computer and connect your tablet to the computer and transfer it to the root of the internal storage that way.
I know this is probably a noob question but the fastboot commands (the first two, for booting from CWRT) -- should they be done in Fastboot Mode or can they be done while Nexus 10 is on and at home screen with USB debugging enabled? If you need to be in Fastboot Mode, how do you get there with Nexus 10?
Thanks!
shimp208 said:
If you download it on your tablet you'll need to then place the downloaded zip on the root of the internal storage (I.E not in a folder). Alternatively you can download it using a computer and connect your tablet to the computer and transfer it to the root of the internal storage that way.
Click to expand...
Click to collapse
Ok, the problem I have now is while I have the files on my tablet, I cannot move them to the root of the internal storage at this point...??? Suggestions??? Don't you have to be rooted in order to do this???
For some reason when I'm not in fastboot mode, I can use adb (adb devices lists my Nexus 10), but when I'm in fastboot mode, adb no longer recognizes the device. fastboot devices does however see it when in fastboot mode.
Anybody else have this problem or know why this might be happening? Thanks!
I'm still getting the sideload error after updating the ADB
Any insight, please?
So to others who are working on this and awaiting responses from the OP, where exactly have you placed the downloaded files on your tablet? specific locations?? and if so how did you get them there? I'm totally lost at this point, LOL, hoping to get some clarification soon...
Worked ... however .. you DO have to be in FASTBOOT already (power + Vol UP + Vol DOWN) - yeah it might be obvious when you're not tired as hell - but for those wondering
The first line should be:
fastboot boot /path/to/<recovery>.img
no fastboot reboot was needed - it rebooted itself.
I had a HELL of a time finding the sideload entry in CWM (that's just my brain deadness).
You have quite a bit of time More than enough.
THANK YOU!
Phone information:
name:-micromax a65
chipset- sc6820(Spreadtrum)
processor-armv7(rev1)(single core)(1GHz)
graphics-mali300
ram-512mb
android os-2.3.5
As preivious thread which was made by me that was flooded so freshing the whole section into one thread with updated insecure boot.img and with flashing updated stock rom.
Code:
#include
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
*i'm not responsible if any damage is done to your device.also if you flash your device using reasearch downloader then you will bump your imei(**you can revert your imei back which is given in this tutorial).
* before flashing it! YOU are choosing to take it as ur own risk and if
you point the finger at me for messing up your device, I will laugh at you.
*/.
Rooting section:
1)First Unlock the Boot IMG
download insecure boot.img from here
download downloader tool and drivers fromhere
stock firmware from here
Now its the main thing for installing drivers & run research downloader properly its suggested to be on Win XP although u can use Win 7* & Win 8**(thanks to @pritish sahoo for giving solution for installing drivers on win 8)
For Windows Xp users:
Nothing to do simply install all the drivers & run research downloader
For Windows 7 users:
1.install driver Signer Enforcement overrider 7 run test mode to disable driver signature verification so that windows 7 will accept the drivers...
how to do>
->first download driver Signer Enforcement overrider from here
->Now install the above downloaded software & run test mode in it as shown in the image below
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->Now restart ur PC
2.Now install all the drivers the driver it will give warnings during install so now u choose install driver software anyway(important)
3.Now ur Done & ready to run Research downloader
(N.B. -U must run Research downloader as administrator)
For Windowns 8 users:
well its slight bit difficult but very easy for advanced users so lets start
1.There is no DSEO software available for win 8 so u have to disable driver signature manually........
Hold down the Windows key on your keyboard and press the letter C to open the Charm menu, then click the gear icon (Settings).
2.Click More PC Settings.
3.Click General. (in win 8.1 u will find this on Update and Recovery)
Under Advanced Startup, click Restart Now.
4.After restarting, click Troubleshoot.
5.Click Advanced Options
6.Click Windows Startup Settings.
7.Click Restart.
8.After restarting your computer a second time, choose Disable driver signature enforcement from the list by typing the number 7(on windows 8.1 press F7 ) on your keyboard
9.After restarting, you will be able to install the Arduino drivers normally; however, Windows will display a warning message. When the warning appears, click Install this driver software anyway
10.Now ur Done & ready to run Research downloader
(N.B. -U must run Research downloader as administrator)
by this method u also able to use fastboot on win 8
Flashing Stock Firmware with unlocked boot:
Ok now take a long breath beacuase you have to flash with your phone with a stock rom and modified boot.img for rooting.
1.Open research downloader(as admin)
2.1.click on first button and load pac file
3.click on second button change baudrate to 115200,in calibration tab untick all.
4.For BOOT_IMG option browse(just double tap over BOOT_IMG then u can get browse option) and select the insecured boot.img that you downloaded from the above......
5.plugin the usb cable to PC(DON'T plugin into the phone now)
6.click on play button
7.PRESS & HOLD VOLUME UP KEY and insert the usb cable,don't release the key.
Download should starts within 3 secs.If it doesn't then check the drivers carefully or reply to this thread with failures.
Once done unplug your phone and remove battery for 3 second.
8.Reinsert battery and restart your phone.
Installing cwmoptional-not required in rooting)
goto this thread
Rooting:
download this tool(unlock root):- http://www.mediafire.com/download/54...Unlockroot.rar
1.make sure you turned on usb debbuging and as well unknown source
2.connect usb cable via mass storage
3.after extracting the rar file open unlockroot.exe
4.just click on root and choose you device .
5. atlast it will say it wants to install a battry saver app i dont know what is that i ignored it do what you want.
5.it will say to reboot your phone and yes you are rooted
Themes/MODS/Custom ROM section:
="http://forum.xda-developers.com/showthread.php?t=2791901"]Go here
Credits
[B @pritish sahoo for giving solution to install drivers on Win 8 & making Custom ROMS/MODS with me
@ElectronikHeart for this
& ofc me( he he )[/B]
problem while loading boot img
download is not starting in research downloader.( actually nothing is happening in downloader)
Aass
---------- Post added at 07:28 AM ---------- Previous post was at 07:28 AM ----------
Bdksnsbssk
---------- Post added at 07:28 AM ---------- Previous post was at 07:28 AM ----------
Hdbdbs
Phone information:
name:-micromax a65
chipset- sc6820(Spreadtrum)
processor-armv7(rev1)(single core)(1GHz)
graphics-mali300
ram-512mb
android os-2.3.5
As preivious thread which was made by me that was flooded so freshing the whole section into one thread with updated insecure boot.img and with flashing updated stock rom.
Code:
#include
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
*i'm not responsible if any damage is done to your device.also if you flash your device using reasearch downloader then you will bump your imei(**you can revert your imei back which is given in this tutorial).
* before flashing it! YOU are choosing to take it as ur own risk and if
you point the finger at me for messing up your device, I will laugh at you.
*/.
Rooting section:
1)First Unlock the Boot IMG
download insecure boot.img from here
download downloader tool and drivers fromhere
stock firmware from here
Click to expand...
Click to collapse
Now its the main thing for installing drivers & run research downloader properly its suggested to be on Win XP although u can use Win 7* & Win 8**(thanks to @pritish sahoo for giving solution for installing drivers on win 8)
For Windows Xp users:
Nothing to do simply install all the drivers & run research downloader
For Windows 7 users:
1.install driver Signer Enforcement overrider 7 run test mode to disable driver signature verification so that windows 7 will accept the drivers...
how to do>
->first download driver Signer Enforcement overrider from here
->Now install the above downloaded software & run test mode in it as shown in the image below
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->Now restart ur PC
2.Now install all the drivers the driver it will give warnings during install so now u choose install driver software anyway(important)
3.Now ur Done & ready to run Research downloader
(N.B. -U must run Research downloader as administrator)
For Windowns 8 users:
well its slight bit difficult but very easy for advanced users so lets start
1.There is no DSEO software available for win 8 so u have to disable driver signature manually........
Hold down the Windows key on your keyboard and press the letter C to open the Charm menu, then click the gear icon (Settings).
2.Click More PC Settings.
3.Click General. (in win 8.1 u will find this on Update and Recovery)
Under Advanced Startup, click Restart Now.
4.After restarting, click Troubleshoot.
5.Click Advanced Options
6.Click Windows Startup Settings.
7.Click Restart.
8.After restarting your computer a second time, choose Disable driver signature enforcement from the list by typing the number 7(on windows 8.1 press F7 ) on your keyboard
9.After restarting, you will be able to install the Arduino drivers normally; however, Windows will display a warning message. When the warning appears, click Install this driver software anyway
10.Now ur Done & ready to run Research downloader
(N.B. -U must run Research downloader as administrator)
by this method u also able to use fastboot on win 8
Flashing Stock Firmware with unlocked boot:
Ok now take a long breath beacuase you have to flash with your phone with a stock rom and modified boot.img for rooting.
1.Open research downloader(as admin)
2.1.click on first button and load pac file
3.click on second button change baudrate to 115200,in calibration tab untick all.
4.For BOOT_IMG option browse(just double tap over BOOT_IMG then u can get browse option) and select the insecured boot.img that you downloaded from the above......
5.plugin the usb cable to PC(DON'T plugin into the phone now)
6.click on play button
7.PRESS & HOLD VOLUME UP KEY and insert the usb cable,don't release the key.
Download should starts within 3 secs.If it doesn't then check the drivers carefully or reply to this thread with failures.
Once done unplug your phone and remove battery for 3 second.
8.Reinsert battery and restart your phone.
Installing cwmoptional-not required in rooting)
goto this thread
Rooting:
download this tool(unlock root):- http://www.mediafire.com/download/54...Unlockroot.rar
1.make sure you turned on usb debbuging and as well unknown source
2.connect usb cable via mass storage
3.after extracting the rar file open unlockroot.exe
4.just click on root and choose you device .
5. atlast it will say it wants to install a battry saver app i dont know what is that i ignored it do what you want.
5.it will say to reboot your phone and yes you are rooted
Themes/MODS/Custom ROM section:
Go here
Credits
@pritish sahoo for giving solution to install drivers on Win 8 & making Custom ROMS/MODS with me
@ElectronikHeart for this
& ofc me( he he )
If u Really Like my guide than hit thanks
reserved
IF U BUMPED UR IMEI THEN FOLLOW THIS THREAD
http://forum.xda-developers.com/gen...spreadtrum-t2927766/post56475762#post56475762
DONT FORGET TO HIT THANKS
Hello folks!
It's been a while since last time I spent in this forum section (when the method for flashing Poland MM KDZ was published), but suddenly I decided to check the current development and it was great do discover that developers found a way to unlock bootloader! Then, I tried to do the procedures, found some adversities around the path, flashed stock KDZ for my device A LOT and finally managed to obtain a fully working LP stock with root and TWRP for my model: H442F (Dual SIM) ("LG Volt 4G" in Brazil).
The thing is: although a lot was done regarding the Spirit LTE, I found near zero information specifically for my device variant. Since I tried a lot of paths and eventually achieved an interesting result, I decided to write a full tutorial, with a lot of instructions and pictures for "novices" who desire learn all the steps but gives up at the high learning curve. Finally, I also wrote this tutorial in Brazilian Portuguese, which I believe will help at least some comrades (you can download the PDF in portuguese HERE).
Needed files:
LG Drivers (remove old ones if already instaled)
LG Flash Tool 2014 (credits to @quangnhut123 from this thread)
Brazilian H442F10a Firmware (this is a low speed server, I can upload to a better one if someone asks)
Android SDK Tools (for Windows users; Linux ones just install the package android-tools-adb)
Kingroot (or download here: www.kingroot.net)
Latin America Patched Aboot (credits to @pvineeth97 , for more info check this thread)
TWRP (or download here: https://twrp.me/lg/lgspiritlte.html)
Flashfy (or download here: https://play.google.com/store/apps/details?id=com.cgollner.flashify&hl=en)
SuperSU (or download here: http://www.supersu.com/)
Finally, if you prefer, you can download a full pack in this link (except for KDZ), however, I did prefer to keep isolated links for better credits and referrals
Step-by-step
Download all needed files
Install drivers, SDK and unpack Flash Tool
Save all files in the same folder, but keep KDZ file inside Flash Tool folder
Put your phone in download mode (power off, hold vol+, plug usb in pc, keep holding until download icon appears)
Wait a little for Windows completely detects device and load all drivers
Verify in Device Manager if your pc detects phone as "LG Mobile USB Serial Port (COM#)"
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Open LG Flash Tool as admin
Select KDZ file
Choose the downloaded H442F10a_03.kdz file
Choose CSE Flash
Click START
Then, "Clear phone software update registry"
You'll see a warning
Then, OK (no need to change country)
Another app will open for the flashing. If you are offline, it is possible to show just a "?" character. Wait patiently...
In about 5min it will finish
After some reboots, you'll see the phone starter screen. Just move forward (no need to configure anything right now, maybe wifi, but not google account)
Enable Developer Options going to Settings/General/Common/Software Information and tap some simes in Build Number until the "You are a developer" message appears
Go back to Settings/Developer Options and turn on USB Debugging
With Debugging on, choose MTP (for Windows) or PTP (Linux), and when asked, allow the computer
Now, make sure you installed (and know how to use, since I will cover just a few commands here) the Android Debugging Bridge (adb). It will be essential for some steps, as well for entering Recovery Mode (I will show some Linux screenshots because I do not use Windows - for this tutorial, just for KDZ flash - but with a working adb the commands are the same)
Open a command prompt (Windows: right click in start menu) or a terminal (Linux) and run "adb devices" to see if the device was detected. If not, run again and check if phone are asking permissions (and grant it)
Go (cd) to the folder with all downloaded files and write the commands (some names may be different if you downloaded individual files from official links)
adb push aboot_5120_patched.bin /sdcard/
adb push twrp-3.2.1.0-cn70n.img /sdcard/
adb push SuperSU-v2.82-201705271722.zip /sdcard/
adb install Flashify_1.9.2.apk
adb install KingrootV5.3.1.apk
At whit point, make sure your internet is fully working (3-4G or WIfi), then, open Kingroot and root the device
After a well successful root, go back to adb and run "adb shell" and then "su". The phone will ask root permission. Grant it and in adb again run "cd /sdcard"
Now we arrived a critical step. Make sure to type the command as is show, because an error may result brick. We will copy the modified aboot into the respective phone partition (check code, check picture, and double check!)
If everything occurs all right, will appear this message
Great! Now you have an unlocked bootloader! What we have to do now is fhash a custom recovery (in this case, TWRP).
Open Flashify, give root rights, then go into Flash/Recovery Image/Choose a file/File explorer/sdcard/[downloaded file]. When asked to flash click "YUP!" and then "Flash More" (as we do not want the phone to reboot right now)
An extra step I prefer to do is remove Kingroot, since it installs a lot of services and keep device substantially slow. If you prefer Kingroot over SuperSU, you are DONE!
Case you prefer SuperSU... Open Kingroot/.../Settings/Uninstall Kingroot
It will prompt if you are sure. Just click Continue/OK
Go back to prompt/terminal and run "adb reboot recovery"
Phone will enter TWRP!
Now, just a few steps!
Go to Install and flash SuperSU
Go to Wipe and do a Factory Reset
Go to Settings and disable TWRP app installer (optional)
And finally go to Reboot and choose System
DONE!!!
Now you have a phone with an unlocked bootloader, a recovery capable of doing a lot of stuff (sideload, wipe cache, backups), and rooted as well.
A really good job, I'm sure a lot of your fellow countryman will find this very useful!
Korelev said:
A really good job, I'm sure a lot of your fellow countryman will find this very useful!
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Thanks man! Today I finally added a link with portuguese-br instructions. Hope more Brazilian users will have the chance to perform these operations!
Valeeeu dms irmao, ajudou dmss
Ninloth said:
Thanks man! Today I finally added a link with portuguese-br instructions. Hope more Brazilian users will have the chance to perform these operations!
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Thanks for the instructions. After unlocking its bootloader, wil it be compatible with any H440 custom rom (single sim operation, of course)? Or the only custom rom we get is Cm12?
Mrkblo said:
Thanks for the instructions. After unlocking its bootloader, wil it be compatible with any H440 custom rom (single sim operation, of course)? Or the only custom rom we get is Cm12?
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Hi!
Well, unfortunately I don't know. I made the procedure, wrote the tutorial, and 2 months later changed my phone for a new one. Can't test anymore.
Mrkblo said:
Thanks for the instructions. After unlocking its bootloader, wil it be compatible with any H440 custom rom (single sim operation, of course)? Or the only custom rom we get is Cm12?
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Yes, it should be compatible with any custom rom as long as your phone is Lg spirit LTE( snapdragon variant ).
Disclaim
All steps described here have been many times tested and proved to be safe but, you may know that sometimes in life unexpected things happen. I'm not responsible for any damage in your devices, do things at your own risk.
Introduction
Thanks to xda user @alexeei we can install almost every Z6 Pro stock ROMs using the Fastboot Mode. You always should check the package content and the installation script(s) to be sure that you know exactly what is gonna be installed. You can find all the ROMs listed and linked in this index.
Let's go with the guide.
0. Pre-requirements
- The Bootloader must be unlocked.
- Lenovo drivers installed in your computer. You can download them here . Thanks @benjieb
1. Download and extract the ROM
You cand find many of them here. Extract the downloaded file and a folder will be created with these contents:
- All the files required for the installation in Fastboot Mode.
- The ROM files.
- The .bat file(s) which contain(s) all the actions that will be performed during the installation.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
You always should check the content of the .bat file(s). Read post #2 to get more info about this.
2. Reboot your device in Fastboot Mode
Shut down your device and boot it holding pressed both Volume Down + Power buttons until the Fastboot Mode menu appears. You can navigate in the Fastboot Mode menu with volume buttons to choose the options and the Power button to confirm, but at this point you don't need to do any action in this menu.
3. Connect the device to the computer with USB cable
4. Execute the .bat file
Just execute the .bat file with a double click and a CMD window will be opened and the installation will start. Only a few lines will appear at the beginning and then nothing will happen, it will seem to be stopped but actually it's not, just be patient because this screen could last around ten minutes. So despite of the 'Invalid sparse file format at header magic", keep the faith and don't do anything but wait.
The device will reboot once the installation is done.
5. Errors in the log. No voice in calls.
Some errors may appear in the CMD window during the installation, this is because some partitions are 'critical' and we're not allowed to modify them via fastboot. Usually this is not a problem because these "small partitions" don't prevent the new ROM to work normally, except if you're installing Android 10 from Android 9. If you change Android version with this method you will find that your micro doesn't work in calls. You can fix it installing these "small partitions" from TWRP.
Any correction, info or advise about this post will be very welcome.
About the .bat file(s):
You always should check the content of these files before doing any installation, specially with recent fastboot installers including several .bat files for diferent uses. Just open the .bat file with right click and select Edit to view the actions included in the file.
None of Alexei's fastboot installers have never included any command to erase Data, but I'd say it's mandatory to check twice the .bat file to be sure that you're not going to affect an undesired partition. In case e.g. the .bat file includes the line 'fastboot flash system system.img' but you don't want System partition to be installed, just delete this line from the file and Save before closing it.
Maybe you want to edit the file to include in the batch any other thing, a custom recovery for instance. Just drop your custom recovery file in the rom folder (the fastboot installer folder) and make sure that the line in the .bat file regarding the recovery matchs with your recovery file name.
Also you can notice that recent fastboot installers include more than one .bat file. They are named in a descriptive way like "UpdateZUI.bat" or "UpsateAOSP", but you should check them anyways. Let's say you're using any of the Q aosp-based custom ROMs (they include Boot and System partitions) and you want to update the vendor and/or the firmware. You should check the .bat files to find which of them suits better with your needs.
descarao81 said:
About the .bat file(s):
You always should check the content of these files before doing any installation, specially with recent fastboot installers including several .bat files for diferent uses. Just open the .bat file with right click and select Edit to view the actions included in the file.
None of Alexei's fastboot installers have never included any command to erase Data, but I'd say it's mandatory to check twice the .bat file to be sure that you're not going to affect an undesired partition. In case e.g. the .bat file includes the line 'fastboot flash system system.img' but you don't want System partition to be installed, just delete this line from the file and Save before closing it.
Maybe you want to edit the file to include in the batch any other thing, a custom recovery for instance. Just drop your custom recovery file in the rom folder (the fastboot installer folder) and make sure that the line in the .bat file regarding the recovery matchs with your recovery file name.
Also you can notice that recent fastboot installers include more than one .bat file. They are named in a descriptive way like "UpdateZUI.bat" or "UpsateAOSP", but you should check them anyways. Let's say you're using any of the Q aosp-based custom ROMs (they include Boot and System partitions) and you want to update the vendor and/or the firmware. You should check the .bat files to find which of them suits better with your needs.
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Thanks for your instruction. Will this method work on other lenovo devices. I have a lenovo tablet running android 10 chinese stock rom, now I would like to flash global stock rom
hilary trump said:
Thanks for your instruction. Will this method work on other lenovo devices. I have a lenovo tablet running android 10 chinese stock rom, now I would like to flash global stock rom
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It depends on the rom package. The packages made to be installed using fastboot are usually very similar, but you should check the .bat files. I could take a look if you provide a link.
descarao81 said:
It depends on the rom package. The packages made to be installed using fastboot are usually very similar, but you should check the .bat files. I could take a look if you provide a link.
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Thanks. The rom has not released yet. I just pre-ordered a chinese variant tablet P11 pro TB-J706F
descarao81 said:
It depends on the rom package. The packages made to be installed using fastboot are usually very similar, but you should check the .bat files. I could take a look if you provide a link.
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I found the link as follows
mirrors.lolinet.com/firmware/lenovo/ Tab_P11_Pro/TB-J706F/TB-J706F_S210002_201015_ROW.zip
But inside the package there is no BAT file though