[ROM][UNOFFICIAL][10.0][tbx304f/l/x] LineageOS 17.1 for Lenovo TAB4 8, ROM for the Lenovo Thinkpad Tablet

[NightCode7]

So my device state in fastboot says its unlocked but when i see the options in developer settings it says bootloader is already unlocked and the option is greyed and seems to show its turned off. So shall i proceed to install the LOS 17.1??
Yes this only happened after i had unlocked the bootloader and i havent installed twrp yet so can i do it now? Am confused.
Thanks for your time mate!View attachment 5351057

Yes, you can install the twrp, custom rom, etc now
The "OEM Unlocking" option is designed like that if you unlock the bootloader then it will grey out simply because there is no use of that button anymore.

 

[Maheswar Sahoo]

Don't know...also asked this question to the developer in telegram group, he said "Stay Tuned"......... I am also waiting for the same

Can you give the link of the Respective Telegram Group

 

[NightCode7]

Can you give the link of the Respective Telegram Group

LOS Builds(Unofficial) [Lenovo Tablets]

LOS Builds(Unofficial) [Lenovo Tablets]

You can view and join @LenovoTabletsLOS right away.

t.me

 

[Maheswar Sahoo]

/*
* I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...).
* Please do some research if you have any concerns about features included in the products you find here before flashing it!
* YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.
* Your warranty will be void if you tamper with any part of your device / software.
* Same statement for XDA.
*/

LineageOS is a free, community built, aftermarket firmware distribution of Android 9 (pie), which is designed to increase performance and reliability over stock Android for your device.

LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.

All the source code for LineageOS is available in the LineageOS Github repo. And if you would like to contribute to LineageOS, please visit out Gerrit Code Review.

What works:
Calls/SMS/Mobile data
Wifi
Bluetooth
GPS
Camera
Audio
FM radio
WLAN and USB tethering
Broken
You tell me

Source code:
device : https://github.com/lenovo-devs/android_device_lenovo_TBX304, https://github.com/lenovo-devs/android_device_lenovo_tb-common/tree/lineage-17.1-msm8937
kernel: https://github.com/lenovo-devs/android_kernel_lenovo_msm8953/tree/lineage-17.1-tbx304
vendor: https://github.com/lenovo-devs/proprietary_vendor_lenovo/tree/lineage-17.1-msm8937

2021-04-08

• Initial release
• Fixed fast charger and OTG
• Fixed touchscreen issues

mailru: lineage-17.1-20210408-UNOFFICIAL-TBX304.zip
gdrive: lineage-17.1-20210408-UNOFFICIAL-TBX304.zip

Previous versions:

How to install
You have to had TWRP installed from this thread TWRP and ROOT for Tab 4 8/10 (Plus) (TB-8704X/F/V,TB-X704L/F, TB-8504X/F, TB-X304L/F or one from link below

In TWRP clean Data if you coming from stock ROM and do Install of this ROM. If you have android 8 stock rom installed you have to format Data with data loss, because used encryption is incompatible with android 7.1

TWRP
Built from omnirom android 9.0 source (twrp 3.4.0), includes same kernel as Lineage build, with support for pstore (kernel logs after crash), exfat, ntfs, reboot to EDL mode.
mailru: tbx304-twrp-3.4.0-20201207.img
gdrive: tbx304-twrp-3.4.0-20201207.img

XDA:DevDB Information
[ROM][UNOFFICIAL][10.0][tbx304f/l/x] LineageOS 17.1 for Lenovo TAB4 8, ROM for the Lenovo Thinkpad Tablet

Contributors
highwaystar_ru
Source Code: https://github.com/lenovo-devs/android_kernel_lenovo_msm8953/tree/lineage-17.1-tbx304

ROM OS Version: 10.x
ROM Kernel: Linux 3.10.x
Based On: LineageOs

Version Information
Status: Testing

Thanks

 

[Rainberry]

Yes, you can install the twrp, custom rom, etc now
The "OEM Unlocking" option is designed like that if you unlock the bootloader then it will grey out simply because there is no use of that button anymore.

Mate if my device gets bricked how do i install the original rom. ? Most of the people have said that it does not work. Have ya tried it when you had maybe bricked your device?

 

[NightCode7]

Mate if my device gets bricked how do i install the original rom. ? Most of the people have said that it does not work. Have ya tried it when you had maybe bricked your device?

yes bricked it many times but you can find the stock rom in Lenovo Rescue and smart assistant to fix your device. From there select your device model and download the rom and flash it through QFIL Tool.

 

[ruiadrmartins]

Just found this thread out of curiosity, and decided to try it out on my Tab 4 10 (tbx304f). And holy **** did this give a new life to the tablet. I used to only use it for watching video or reading with the stock Android 8 ROM. Using the browser was a pain. But now everything is much smoother and not a pain to use at all. It's like I bought a brand new tablet.

The only (possible) issue I found so far is when using a magnetic cover case. The screen wakes up when I open it, but doesn't shut down when I close it.

 

[hk96]

Just found this thread out of curiosity, and decided to try it out on my Tab 4 10 (tbx304f). And holy **** did this give a new life to the tablet. I used to only use it for watching video or reading with the stock Android 8 ROM. Using the browser was a pain. But now everything is much smoother and not a pain to use at all. It's like I bought a brand new tablet.

The only (possible) issue I found so far is when using a magnetic cover case. The screen wakes up when I open it, but doesn't shut down when I close it.

Working fine here

 

[ChumaHG]

Just found this thread out of curiosity, and decided to try it out on my Tab 4 10 (tbx304f). And holy **** did this give a new life to the tablet. I used to only use it for watching video or reading with the stock Android 8 ROM. Using the browser was a pain. But now everything is much smoother and not a pain to use at all. It's like I bought a brand new tablet.

The only (possible) issue I found so far is when using a magnetic cover case. The screen wakes up when I open it, but doesn't shut down when I close it.

Sorry for the inconvenience, but could you tell me which version of TWRP and ROM you used them .. ??

I have the same X304F tab and I want to optimize it for my son and his school assignments.

Beforehand thank you very much.

 

[ruiadrmartins]

Sorry for the inconvenience, but could you tell me which version of TWRP and ROM you used them .. ??

I have the same X304F tab and I want to optimize it for my son and his school assignments.

Beforehand thank you very much.

Sure. I used TWRP 3.4.0 that is on the OP. -> TWRP 3.4.0
And used this ROM from the OP as well -> ROM

I had the same issue as this guy, but following his steps, I managed to do it.

 

[ChumaHG]

Sure. I used TWRP 3.4.0 that is on the OP. -> TWRP 3.4.0
And used this ROM from the OP as well -> ROM

I had the same issue as this guy, but following his steps, I managed to do it.

all excellent, I was able to install the rom just a doubt, I take care of the 6.89gb system, 43% of the total storage .. is it right or did I do something wrong? greetings and thanks for your valuable information

 

[Mysteriouslog6]

The rom just keeps trying to boot and is stuck on the Bootanimation on x304L any fix? The Lineage OS 16 rom was booting to recovery but this one just gets stuck at the bootanimation (Been atleast 15minutes since it has been stuck at this screen)

 

[Rainberry]

is your problem solved?
First boot always takes time so be patient...wait for like 20 to 30mins...

 

[Mysteriouslog6]

is your problem solved?
First boot always takes time so be patient...wait for like 20 to 30mins...

No , I waited for 1.5 hours and it still just kept booting , I reflashed stock rom using Smart Assistant but it wouldnt even boot back to stock rom just show the logo and then restart to 900E.

Edit: I reflashed and this time it will boot but after about 30seconds it will lockup and just crash.

 

[Rainberry]

No , I waited for 1.5 hours and it still just kept booting , I reflashed stock rom using Smart Assistant but it wouldnt even boot back to stock rom just show the logo and then restart to 900E.

Edit: I reflashed and this time it will boot but after about 30seconds it will lockup and just crash.

what do you mean by lockup... for now just try to reflash the stock rom and then again install the twrp which was 3.2.3 or 3.4 and then yes you even need to have magisk...idk why but most ppl said they had issues when they did not install magisk with the rom.. so install rom magisk and then gapps if you want...and try...if it doesnt work.. you can tell us
and join this group for help

LOS Builds(Unofficial) [Lenovo Tablets]

You can view and join @LenovoTabletsLOS right away.

t.me

 

[Mysteriouslog6]

what do you mean by lockup... for now just try to reflash the stock rom and then again install the twrp which was 3.2.3 or 3.4 and then yes you even need to have magisk...idk why but most ppl said they had issues when they did not install magisk with the rom.. so install rom magisk and then gapps if you want...and try...if it doesnt work.. you can tell us
and join this group for help

LOS Builds(Unofficial) [Lenovo Tablets]

You can view and join @LenovoTabletsLOS right away.

t.me

Magisk? I didn't try magisk , will try! Did you have issues mounting persist in twrp? If not can you send a backup of your persist from twrp?

 

[Mysteriouslog6]

@highwaystar_ru Can you please send a dmesg of the rom after boot (Reboot to recovery and then dmesg) mine seems to have a few errors and I wanted to know if they are common or not.

My dmesg is here

 

[ravenchaser210]

my oem unlock switch is greyed out in developer mode, anybody else having same issue? Googling said there's a "waiting period", is there any truth with that?

 

[Rainberry]

my oem unlock switch is greyed out in developer mode, anybody else having same issue? Googling said there's a "waiting period", is there any truth with that?

what does your device state say in fastboot mode? if it says unlocked proceed with the installation of twrp and custom rom.

 

[ravenchaser210]

what does your device state say in fastboot mode? if it says unlocked proceed with the installation of twrp and custom rom.

it's locked..., btw I am on tb-x304f, android 8.1, any kind of assistance would be great.