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Just upgraded to LOS 14.1 unofficial from MM - this is how

Thought I would make a thread, which could help someone.
My bootloader is unlocked
I was using Marshmallow LOS 13 unofficial build by Qbanin.
But these directions should be the same for anyone on MM unlocked.
You will need to know how to use ADB from PC and have platform-tools.
The reason I upgraded to 14.1 unofficial instead of official is because official requires the MM modem, and I had already flashed the stock nougat rom when i started looking for roms to flash.
Download the Nougat Stock Firmware:
https://androidfilehost.com/?fid=889964283620765304
Drop the contents of unzipped stock nougat into your platform-tools folder.
Hit the shift button and right click the mouse and 'open command window here'
Connect your MM device to your pc - booted into your current rom with usb debugging enabled
In the command windows type 'adb devices', you may need to confirm access on the screen of your phone, and try the command again.
Make sure your device is listed and authorized.
Type in the command window 'adb reboot bootloader'
Your device will reboot into the bootloader and is ready to program
Run these commands to flash stock nougat, make sure each command succeeds.
If they do not, run any command that fails multiple times until it succeeds and move on to the next, if a command fails more than 5-10 times in a row, start over from the beginning.
fastboot flash partition gpt.bin
fastboot flash bootloader bootloader.img
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img_sparsechunk.0
fastboot flash system system.img_sparsechunk.1
fastboot flash system system.img_sparsechunk.2
fastboot flash system system.img_sparsechunk.3
fastboot flash system system.img_sparsechunk.4
fastboot flash system system.img_sparsechunk.5
fastboot flash system system.img_sparsechunk.6
fastboot flash system system.img_sparsechunk.7
fastboot flash system system.img_sparsechunk.8
fastboot flash system system.img_sparsechunk.9
fastboot flash modem NON-HLOS.bin
fastboot erase modemst1
fastboot erase modemst2
fastboot flash fsg fsg.mbn
fastboot flash bluetooth BTFM.bin
fastboot erase cache
fastboot erase userdata -w
fastboot reboot
If your device reboots into bootloader repeatedly run this command:
fastboot oem fb_mode_clear
fastboot reboot
Your device will reboot, wait a while during Nougats first run.
Once Nougat is loaded and you pass setup, enable developer options and then ADB usb debugging.
run 'adb devices' command again and confirm the device is listed and authorized.
Download latest official TWRP 3.2.1.0
https://eu.dl.twrp.me/clark/
rename the file to twrp.img and place in the platform-tools folder
Download LOS 14.1 Unofficial (the latest build 2/23 is for MM modem: avoid)
Grab the 2/18 build or read around the forums for latest compatible build
https://androidfilehost.com/?w=files&flid=131793
Move the file to the root of your external sd card via MTP.
Download ARM64 7.1 OpenGapps and move to root of your external sd card
http://opengapps.org/
Run these commands in the command prompt
adb reboot bootloader
adb flash recovery twrp.img
Press 'down vol' for the recovery option and then press the power button
Phone should reboot into TWRP recovery
Allow TWRP to modify contents by swiping at the bottom.
Remember TWRP makes you swipe if your screen shuts off, so you may need to swipe twice to peform operations, ALWAYS PAY ATTENTION IN TWRP.
Select WIPE in twrp, and then ADVANCED WIPE.
Select the Data checkbox and hit the Repair or Change File System at bottom.
Select CHANGE FILE SYSTEM at bottom right.
Select F2FS and proceed with the format.
Select WIPE (again) from home screen choose to wipe dalvik,system,internal & cache
Select INSTALL from home screen and choose the LineageOS 14.1 build.
You will need to SELECT STORAGE at bottom left and choose your external card.
Add the openGapps 7.1 to the install queue as well.
Swipe to confirm flash and let the new rom and gapps install.
After complete wipe dalvik/cache and reboot.
Enjoy your new rom.
I also flashed systemless root in twrp.
https://drive.google.com/file/d/1GjKdxvoTi9YCU43HIy2XTTcB-bGnNn84/view?usp=sharing
This is for unofficial 14.1 only using the 2/10 or 2/18 build only.
The 2/23 build as I understand is a test build for MM modem only.
All future builds should be verified around the forum with hashbangs notes/recommendations as they do not exist at the time of this post.

Tutorial fix stuck on fastboot mode for rom global

- There are some models when the faulty update will hang on fastboot because the previous recovery has been changed. Here my device uses the global NA rom and has rooted the device, and when I updated it from v1.18 to v1.20, when booting up the recovery system failed, I was taken to the fastboot screen and stopped at the fastboot screen.
*TUTORIAL:
- S1: Install driver zte+usb android and adb fastboot tool (if you haven't).
- S2: Copy file recovery.img (of rom global you use) to folder adb
- S3: Open folder adb and open cmd cd to folder adb and type command:
fastboot devices //Check if the device is connected, if not then review the driver
fastboot oem nubia_unlock NUBIA_NX629J
fastboot flash recovery recovery.img
fastboot reboot
Done

Custom ROM for Panasonic Tab 8

I want a custom rom and how to root guide for panasonic tab 8 hd. There's an option to unlock bootloader in system settings. So it's easy to unlock it. I think I need to have microG as I have to use Whatsapp for my classes. I can provide you with the details of the device if required.

1. Activate USB debugging
2. Backup all your data.
3. Pull your boot.img and Vemata and save them in your external sdcard.
4. Install Magisk 22.1apk
5. Open it from home page and install the app.
6 now touch Magisk and chose force encryption.and enter
7. In popup dialogue tick selctand patch file and enter
8. Now chose the boot.img file you saved in the external sd card. Now the magisk will process it put the file in your internal sdcard in the download section.
9. Now save the magisk processed boot.ing on your desktop or in any folder and remember the location. It is advisable rename that with 2or 3 letters and paste it in th9/e ADB folder where you have installed the Platform files.
10. Now you open platform folder and open cmd inside the Platform tool. In the ensuing cmd window check for
adb devices.
Your device I'd will come to the next line. Then type
adb reboot bootloader
Now check
fastboot devices
your phone I'd will pop up.
Unlock bootloader:
Type fastboot flashing unlock
then click volume up bottom over.
Not you come again till the step 10.
Rooting process:
Now type
fastboot flash boot " the magisk processed, boot.img which you have renamed.
Now the patched boot.img will relace stock boot.img
Again come back and type
fast boot "-- disable-verification flash vbmeta " put your vbmeta file that earlier you have saved in the Platform folder.
that is all it is rooted.
please note that before starting the root activities you have to unlock your boot loader.
On your own you are doing. I take no responsibility.
by this process only I have rooted the phone. And with WWR MTK Tool and SPFT I have managed to get the stock firmware files. With native preloader. But flashing with this preloader needed patched boot.img file

How to Root the Umidigi A7S

How to Root the Umidigi A7S
See also OFFICIAL Umidigi Root your Device and Android 10 & 11 ROOT pages​
Unlock the Bootloader
On the PC
Download and install All Mediatek MTK Driver Pack
Download ADB and Fastboot (platform-tools) and unzip it to a folder on the desktop
Open the platform-tools folder, type in CMD, and press Enter to launch the Command Prompt
On the Phone
Enable USB Debugging and OEM Unlocking in Developer options
When prompted Allow debugging to connected PC
The Process
Connect your device to PC via USB cable
Type adb devices in the Command Prompt to make sure that the device has successfully connected to the ADB mode
Type adb reboot bootloader in the Command Prompt to enter fastboot mode
Type fastboot devices in the Command Prompt to make sure that the device has successfully connected to the fastboot
Type fastboot flashing unlock in the Command Prompt to open the unlock message on your device
Select Volume Up (as per unlock message) on the phone to unlock the bootloader
Type fastboot reboot in the Command Prompt to start the factory data reset (may take a few minutes)
Root the Device
On the PC
Download the latest ROM from the A7S ROM page and unzip it to a folder
Copy the boot.img file from the ROM folder to the phone’s SD Card using USB File Transfer
Download Magisk Manager Apk and copy it to the phone’s SD Card using USB File Transfer
On the Phone
Enable USB Debugging in Developer options
Enable USB File Transfer to receive files from PC
Install the Magisk Apk from the SD Card
Open the Magisk App, select Install, select the boot.img file from the SD Card and press LET’S GO to install a patched boot image file to the internal memory
Reboot and enable USB File Transfer to allow PC access
Flash the patched boot image (on the PC)
Copy the patched boot image file from the phone to the platform-tools folder and rename it patched_boot.img
Copy the vbmeta.img file from the ROM folder to the platform-tools folder
In the platform-tools folder, type in CMD, and press Enter to launch the Command Prompt
Type adb reboot bootloader in the Command Prompt to enter fastboot mode
Execute the following commands
fastboot --disable-verity --disable-verification flash boot patched_boot.img
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
Type fastboot reboot in the Command Prompt to reboot to your newly Rooted A7S Phone

Install the latest TWRP and Magisk for POCO F4 GT

Here you can get the latest TWRP image files for Android 12 and 13 (A12/A13)
Recovery for Xiaomi devices - Browse /ingres at SourceForge.net
List of relevant recovery in one place
sourceforge.net
Use the Mi Unlock Tool to unlock the bootloader, note you have to go to the Mi Unlock status at the development tools to add the current Mi Account that the phone is linked to, so you'll be able to use the tool as you'll have to login to that account in the tool. There is unfortunately a 7 days wait time after you've added the account to the Mi Unlock status until you'll be able to use the tool to unlock the bootloader. Here's the latest available download link for the tool, but after running the tool, a newer version will be asked to download. Unzip the zip files and use the tools in the folder:
https://miuirom.xiaomi.com/rom/u1106245679/6.5.224.28/miflash_unlock-en-6.5.224.28.zip
You can use the Mi Unlock tool folder to use fastboot, within it is the necessary fastboot files to install the fastboot driver and to use the fastboot terminal.
Move the TWRP file into that folder and rename it to TWRP.img for so you won't have to type in a long filename in the terminal.
Boot the phone into fastboot mode. You can find the driver installer in the Mi Unlock folder if you have yet to install the fastboot driver. Open up the installer and connect the phone to the computer, that should install the driver. After that you can run the fastboot terminal.
Type CMD in the address bar in the Mi Unlock folder to open up the fastboot terminal.
In the terminal type fastboot devices to see if the phone is properly connected.
Then you can type fastboot boot twrp.img, that should boot the phone into TWRP recovery mode.
Go to the Advanced section and choose Flash current TWRP to install TWRP to the phone.
Reboot the phone into recovery mode and go back to the Advanced section and click on Install Magisk to root the phone.
You may need to format the data so the phone will boot correctly if you're having a bootloop.

Thank u so much bro , keep it up , and please if they released any custom rom except " elite rom " cause its paid one , than tell us .

C:\Users\Aly\Downloads\Poco F4 GT>fastboot devices
3af8599a fastboot
C:\Users\Aly\Downloads\Poco F4 GT>fastboot boot twrp.img
fastboot: error: cannot load 'twrp.img': No such file or directory
Any help?
UPDATE:
I found the solution.
Never try to "fastboot boot" these images. If you do that, you will get a "Bad Buffer Size" error and your device will be stuck in fastboot mode.
T
o get out of being stuck in fastboot mode, run these commands:
Code:
fastboot erase misc
fastboot set_active a
Then install the recovery correctly like this:
fastboot flash recovery_ab "drag the twrp.img here"
fastboot reboot recovery