[Android General] AeonFlux1603:
I didn't want to start another thread for this fastboot flashable firmware package, especially since we have no dedicated device forum. From what I've read on the XDA guidelines, posting a thread isn't required, since source code doesn't need to be referenced, credits given, etc. So I'll post it here. (I am noobish at posting threads, so somebody please let me know if posting here is within the scope of XDA rules.)

This firmware package can be used to restore a boot looping or soft-bricked device to full stock condition, AS LONG AS fastboot mode is accessible on the device. Otherwise, it will be necessary to go the SP Flash Tool route.

Minimal ADB & Fastboot (v1.4.3 recommended) should be installed on your PC. Download the firmware package from the link below and extract the contents of the archive to your ADB/Fastboot directory. Next boot your device into fastboot mode. This can be done by syncing your PC and tablet with a quality or OEM provided micro USB sync/charge cable -- ensuring that ADB Debugging is enabled in Developer Options and the correct ADB drivers are installed on your PC -- and opening a command window in the ADB/Fastboot path. Execute this command:

adb devices

If properly connected, the command window will display your device serial number. Now type

adb reboot bootloader

This will boot your device into fastboot mode. Fastboot mode can also be accessed from recovery mode by choosing Boot into Bootloader from the stock recovery menu (Reboot Bootloader if using TWRP custom recovery). [This process will remove any custom.mods on your device (root, BusyBox, Xposed Framework, GravityBox, etc.). It will also overwrite any custom recovery (such as TWRP or CWM) with the stock recovery.] I cannot recall whether flashing this firmware package locks the bootloader, as does the SP Flash Tool firmware installation method.

Once in fastboot mode, open a command window and type

fastboot devices

Again, if connected correctly, your device serial number should be displayed in the command window. After ensuring that a connection is correctly established between the tablet and your PC, execute the following fastboot commands in this order:

fastboot oem fb_mode_set

fastboot flash flashinfo flashinfo.img

fastboot flash lk lk.img

fastboot flash boot boot.img

fastboot flash recovery recovery.img

fastboot flash expdb expdb.img

fastboot flash keystore keystore.img

fastboot flash oemkeystore oemkeystore.img

fastboot flash metadata metadata.img

fastboot flash para para.img

fastboot flash proinfo proinfo.img

fastboot flash protect1 protect1.img

fastboot flash protect2 protect2.img

fastboot flash seccfg seccfg.img

fastboot flash secro secro.img

fastboot flash tee1 tee1.img

fastboot flash tee2 tee2.img

fastboot flash system system.img

fastboot erase cache

fastboot erase userdata

fastboot oem fb_mode_clear

fastboot reboot

Please take note that when flashing the large system.img file (3GB), fastboot will return with a header size error. However, be patient here and wait. Fastboot will automatically parse the system image into several smaller sparsechunks and flash them in incremental order. This process can take a few minutes, so just be patient and wait on it to complete. Oddly enough, this rather robust firmware package is devoid of the stock boot logo image, which technically isn't necessary for proper function of the Android OS. For members who need logo.img, I have included it below. It can be installed by using

fastboot flash logo logo.img

Download Link: https://drive.google.com/file/d/11gU0kHdCRdgecCsTYOmsZCil3iyvTDA2/view?usp=drivesdk

Stock Boot Logo: https://drive.google.com/file/d/1zFZ-0ffTVfrNa0DfJTIrJk5GqErkCqWP/view?usp=drivesdk