Lenovo tab m8

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zenowaren

zenowaren

Senior Member
May 3, 2011
69
10
Xiaomi Mi A2 Lite
Samsung Galaxy Tab A8
@Dhwaj I flashed this Android 13 GSI ROM for daily usage(Reading books and surfing, no game). Same bugs which are on Android 12 GSI ROMS. It is very smooth. Also the ROM is updated mounthly.

No random app crashes. That might be because i wiped the device with a fastboot command(But all personal data is deleted), after i flashed rom.
 
Last edited:
Dhwaj

Dhwaj

Member
Jul 16, 2021
12
2
zenowaren said:
@Dhwaj I flashed this Android 13 GSI ROM for daily usage(Reading books and surfing, no game). Same bugs which are on Android 12 GSI ROMS. It is very smooth. Also the ROM is updated mounthly.

No random app crashes. That might be because i wiped the device with a fastboot command(But all personal data is deleted), after i flashed rom.
Click to expand...
Click to collapse
How did you flash Android 13 and which room. Can you please tell it's name because after after all the a13 GSI none of them worked
 
Dhwaj

Dhwaj

Member
Jul 16, 2021
12
2
Hi
I'm out with a new Android 12.1 GSI
THE kaieledoscope os
Smoothest Android 12 GSI on Lenovo tab m8 better than lineage os 19 and evolution X a12 . But only one bug reported when you press the power button the device sleeps but when you press it again it doesn't work to wake up the device.But thankfully in the os there are other features like lift to wake is fully functional.
And to shut down click on power button in the notification shade.
Geekbenchscore was also higher not as stock a10 but I also tried aosp 11 it's geekbenchscore matches with stock a10 score and that was really smooth smoother than stock a9&a10.i think I need to install spectrum or any other performance injector module because I rooted this rom manually with magisk v26.1 as you can see in the screenshot . All the gestures related to power button works fine. And os animation are buttery smooth.
The shocking thing is that all the features worked just as stock and not a single app crash. #DYNAMIC YOU
Here are some screenshots.
Screenshot_20230601-084724.png
Screenshot_20230601-084014.png
Screenshot_20230601-083118.png
Screenshot_20230601-082859.png
Screenshot_20230601-082815.png
Screenshot_20230601-082600.png
Screenshot_20230601-082546.png
Screenshot_20230601-082441.png
Screenshot_20230601-082436.png
Screenshot_20230601-082353.png
Screenshot_20230601-082328.png
Screenshot_20230601-082320.png
Screenshot_20230601-082242.png
Screenshot_20230601-082225.png
Screenshot_20230601-082216.png
Screenshot_20230601-090504.png
 
zenowaren

zenowaren

Senior Member
May 3, 2011
69
10
Xiaomi Mi A2 Lite
Samsung Galaxy Tab A8
Dhwaj said:
How did you flash Android 13 and which room. Can you please tell it's name because after after all the a13 GSI none of them worked
Click to expand...
Click to collapse
Download this ROM TrebleDroid-A13-20230413-treble_arm64_bgN.img.xz
Here are the fastboot commands that i flash GSI ROM.

Be carefull, it deletes all user data and cache.

Code: 
adb reboot bootloader
fastboot flash boot boot.img
fastboot --disable-verification flash vbmeta vbmeta.img
fastboot erase system
fastboot flash boot boot.img
fastboot flash system ROM_PATH
fastboot -w
fastboot format cache
fastboot erase userdata
fastboot reboot

After reboot, there is no boot animation. You should wait 5-15 minutes. Than it boots.
 
Dhwaj

Dhwaj

Member
Jul 16, 2021
12
2
zenowaren said:
Download this ROM TrebleDroid-A13-20230413-treble_arm64_bgN.img.xz
Here are the fastboot commands that i flash GSI ROM.

Be carefull, it deletes all user data and cache.

Code: 
adb reboot bootloader
fastboot flash boot boot.img
fastboot --disable-verification flash vbmeta vbmeta.img
fastboot erase system
fastboot flash boot boot.img
fastboot flash system ROM_PATH
fastboot -w
fastboot format cache
fastboot erase userdata
fastboot reboot

After reboot, there is no boot animation. You should wait 5-15 minutes. Than it boots.
Click to expand...
Click to collapse
Can you please send me that rom's geekbench 5 score please .with screenshot.
 
K

Krappa420

Senior Member
Dec 7, 2017
69
16
Everyone, if you are flashing GSI ROMs. I suggest flashing ones without GAPPS because I have seen major difference. The once with GAPPS slowed the device down horribly. I just use Aurora Store instead of play store and flashed the one without gapps
 
N

names

Senior Member
Jun 28, 2013
97
20
I have the lenovo tab m8 tb-8506f variant and was messing around with installing GSI builds today, seeing which would be best, when I realized after finally getting the process down and the roms booted they cannot detect internal storage? What I mean is, I cannot download any files from the web or Google Play Store as the system thinks there's no storage space available. Thoughts?

Now today cannot get the device out of fastboot mode and have never been able to use the SP Flashing Tool
 
Last edited:
N

names

Senior Member
Jun 28, 2013
97
20
thierry beccaro said:
I had the same storage issue after flshing GSIs (also with tb-8506f), no idea why but didn't search for a solution too much.

You can use this to rescue to tablet, it's lenovo's own sp flash tool :

Rescue and Smart Assistant (RSA) - Lenovo Support US

support.lenovo.com support.lenovo.com
Click to expand...
Click to collapse
Thanks for the reply, but unsure this will work for me. I am at the Authorization step for, "Check this option on your device to authorize USB debugging." but cannot since I am limited to the Fastboot, Fastbootd, and recovery screens. I am able to get to the little dead android screen with "Error!" but cannot get anywhere to allow for the next step(s)
 
N

names

Senior Member
Jun 28, 2013
97
20
thierry beccaro said:
Your tablet need to be switched off to perform the rescue
Click to expand...
Click to collapse
Yes, that is where I start but upon plugging in via USB to the computer it boots right into fastboot as soon as it detects power via the USB.

Update: The recovery tool worked this morning with no issues. The device did not auto power on like previous times and the tool flashed back the factory ROM and the device has now booted correctly.
Thanks again @thierry beccaro !
 
Last edited:
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V

Velitacast

Member
Aug 22, 2015
21
11
Anyone have any theories about what's causing the internal storage bug? I've tried a handful of GSIs with several different flashing methods (full wipe before and after flash, no wiping, rescue then flash) and they all seem to present the same issue. External SD card doesn't seem to work either, even after formatting. Working with a TB-8506FS here, willing to help test.
 
Dhwaj

Dhwaj

Member
Jul 16, 2021
12
2
Velitacast said:
Anyone have any theories about what's causing the internal storage bug? I've tried a handful of GSIs with several different flashing methods (full wipe before and after flash, no wiping, rescue then flash) and they all seem to present the same issue. External SD card doesn't seem to work either, even after formatting. Working with a TB-8506FS here, willing to help test.
Click to expand...
Click to collapse
Bro which gsi ur using send the name
I think you are using m8 3rd gen I'm using an m8 hd 2nd gen.
Am correct?
 
E

ep312

Member
Aug 12, 2022
7
1
zenowaren said:
Download this ROM TrebleDroid-A13-20230413-treble_arm64_bgN.img.xz
Here are the fastboot commands that i flash GSI ROM.

Be carefull, it deletes all user data and cache.

Code: 
adb reboot bootloader
fastboot flash boot boot.img
fastboot --disable-verification flash vbmeta vbmeta.img
fastboot erase system
fastboot flash boot boot.img
fastboot flash system ROM_PATH
fastboot -w
fastboot format cache
fastboot erase userdata
fastboot reboot

After reboot, there is no boot animation. You should wait 5-15 minutes. Than it boots.
Click to expand...
Click to collapse
This install works well for me and is the first Android 13 rom I've used on the M8, but it has the same audio issue (plugging in the headphone doesn't disable the internal speaker) as the AndyYan LineageOS builds.

I couldn't get the LineageOS 20 Light rom working. I'm just going to buy a bluetooth adapter to work around the headphone issue.

This is for the TB-8505F (second gen). It sounds like the folks who have been able to get the Lineage 20 roms working, and those that have the issues with the sdcard not being recognized have the third generation.
 
Last edited:
N

names

Senior Member
Jun 28, 2013
97
20
Dhwaj said:
Bro which gsi ur using send the name
I think you are using m8 3rd gen I'm using an m8 hd 2nd gen.
Am correct?
Click to expand...
Click to collapse
I cannot speak for @Velitacast but can confirm the TB-8506FS is a Gen 3.

I have the Gen 3 - TB-8506F with the same issue. ROMs I have tried have been those from the Generic System Image (GSI) list on Github. I tried many in the list, some work well on the device while others can't get past the setup screen. A few I have tried and setup, which work well sans the storage issue, are Project Elixir and Evolution X.

While flashing, these were the cmd's I was using:

Within FASTBOOT-D:
fastboot flash boot boot.img
fastboot erase system
fastboot flash boot boot.img
fastboot flash system "Name of Custom Rom.img"

Within FASTBOOT:
fastboot -w
fastboot erase userdata
fastboot reboot

System would load fine with ROM and could setup but then upon trying to download or install any app it says there's not enough storage/storage issue. View the storage and there's plenty, but the system doesn't recognize/can't access it.
 
Dhwaj

Dhwaj

Member
Jul 16, 2021
12
2
Hello
Today is the review of elixir project
The experience was smooth.
No issues,SD card works perfect.
CPU geekbench scores with just system game mode on no other tweaks.
Screenshot_20230614-083505_Geekbench 5.png




These are with raiden perf tweaks with perf mode on not he gaming mode . 3 consecutive runs.
Screenshot_20230614-083443_Geekbench 5.png
Screenshot_20230614-083454_Geekbench 5.png
Screenshot_20230614-083500_Geekbench 5.png


A lots and lots of customisation. Full of customisation
Screenshot_20230614-083135_Settings.png


Android 13 version elixir project v3.8
Here are some screenshots
 

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    Deleted member 1890170
    am24901 said:
    Hello,
    I recently purchased the Lenovo tab m8 to replace the outdated navigation system in my car. I thought that since it came with a dock station that I would be able to connect the otg cable on the micro USB port. However this does not work, if it’s charging on the dock and I connect the OTG it stops charging. Does anyone know how I can die both things simultaneously?
    Click to expand...
    Click to collapse
    Look here: https://www.instructables.com/id/DIY-Cable-to-Use-OTG-and-Simultaneously-Charge-the/
    View
    3
    numbazZ
    numbazZ
    I'm trying to port TWRP for 8505F, but it asks me a password to decrypt data, even if I have no password lock on AndroidIMG_20210101_210302_tigr.jpgIMG_20210101_210132_tigr.jpg

    So. Works well after I performed a Format Data, flashed Magisk zip and DM Verity force encryption disabler. Here is what I did. If you don't want to lose all your data, don't do this.

    Works with Android 10, for 9 it only flashes with SP Flash Tool swapping the stock recovery to this one

    1. You need to have an external SD card to put files in, MTP does not work for now for some reason. Also, enable USB debugging obviously
    2. Download Magisk zip from HERE and DM verity & force encryption disabler zip from HERE and put them inside your external SD card.
    3. Reboot to bootloader ./adb reboot bootloader
    4. Flash a recovery ./fastboot flash recovery twrp8505f.img
    5. Reboot to recovery ./fastboot reboot recovery
    6. In recovery when it asks for password press Cancel and go to Wipe - Format Data, type yes.
    7. Now reboot to recovery again, go to Install, select Magisk zip, flash it, then go back to Install and flash DM verity disabler
    Now everything should be fine, you can reboot to system and back to recovery without problems

    This is my first attempt to port a recovery image, I wouldn't mind if someone will help me to figure out why MTP isn't working and maybe something else will appear
    View
    2
    X
    Xenograph
    I managed to root it for now, using magisk_manager.apk and a boot.img, I extracted from a file named "TB-8505F_S100133_200316_BMP.zip" (which is the latest firmware for the M8-8085F)
    am unable to find any TWRP for the device.
    but at least: got root now.
    View
    2
    A
    am24901
    OTG and Charge Simultaneously

    Hello,
    I recently purchased the Lenovo tab m8 to replace the outdated navigation system in my car. I thought that since it came with a dock station that I would be able to connect the otg cable on the micro USB port. However this does not work, if it’s charging on the dock and I connect the OTG it stops charging. Does anyone know how I can die both things simultaneously?
    View
    2
    I
    Isrgish
    Q... said:
    Hi,
    managed to unlock the bootloader on TB-8505X by connecting it to an apple mac instead of W7. Worked via ADB and fastboot, without need to install USB drivers manually.

    What would be the next advisable step(s) to take in order to achieve root?
    I had a look @ the TWRP site, but there was no TWRP recovery offered for the TB8505F/X.

    Any thoughts appreciated. Cheers!
    Click to expand...
    Click to collapse

    1. Go to Lenovo site and download Rescue and smart assistant. Install and run.
    2. On the rescue tab you can download the firmware for your tab (it needs to be connected to the PC).
    3. Goto where you downloaded the firmware. In the RomFiles folder find the boot.img file. copy it to your device.
    4. Install Magisk Manager on your device. Run and select install. select the option to patch a file and select the boot.img file you copied to your device.
    5. markdown the location that magisk shows where it saved the patched file. Copy this file back to your PC.
    6. Flash the file to your device with fastboot flash boot <patched file location>
    7. reboot your device and run again magisk manager this should install the magisk zip file and you are rooted.
    View

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