[ROM][UNOFFICIAL][7.1.2][tb8704f/x/v] LineageOS 14.1 for Lenovo TAB4 8 plus

[highwaystar_ru]

/*
 * 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 8 (oreo), 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
Torchlight
LED
USB and WLAN tethering
Fingerprint sensor
Broken
Permissive selinux
You tell me

Source code:
device : https://github.com/HighwayStar/android_device_lenovo_TB8704
kernel: https://github.com/HighwayStar/android_kernel_lenovo_tb8704
vendor: https://github.com/HighwayStar/android_vendor_lenovo_TB8704

2020-01-02

• Fixed issue with OTG
• Enabled kernel config CONFIG_IP_NF_TARGET_TTL (needed for tethering with some operators)
• Updated Lineage code

mailru: lineage-14.1-20200102-UNOFFICIAL-TB8704.zip
gdrive: lineage-14.1-20200102-UNOFFICIAL-TB8704.zip

Previous versions:

2019-07-14

• Added more device names to allow to work with different twrp builds (this should resolve error 7 on install)
• Added thermal configuration
• Enabled exfat and ntfs filesystems
• Fixed couple of crashes on wifi only tablet

mailru: lineage-14.1-20190714-UNOFFICIAL-TB8704.zip
gdrive: lineage-14.1-20190714-UNOFFICIAL-TB8704.zip

2019-07-13

• first release

mailru: lineage-14.1-20190713-UNOFFICIAL-TB8704.zip
gdrive: lineage-14.1-20190713-UNOFFICIAL-TB8704.zip

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)

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

Thanks
Big thank to @mistersixt, who donated $$ for device.

XDA:DevDB Information
[ROM][UNOFFICIAL][7.1.2][tb8704f/x/v] LineageOS 14.1 for Lenovo TAB4 8 plus, ROM for the Lenovo Thinkpad Tablet

Contributors
highwaystar_ru
Source Code: https://github.com/HighwayStar/android_kernel_lenovo_tb8704

ROM OS Version: 7.x Nougat
ROM Kernel: Linux 3.10.x
Based On: LineageOs

Version Information
Status: Testing

Created 2019-07-13
Last Updated 2019-07-14

 

[highwaystar_ru]

This is technical build, just to test all of hardware works fine with open source kernel. Lenovo shared kernel source was incomplete and I had to make dts code from scratch. Please report if anything hardware related broken. Also I have on TB-8704X to test, reports about how it works on TB-8704F and TB-8704V are welcome.

 

[lancebuks]

This is great - thank you @highwaystar_ru for your work. I'll test it on my TB-8704X today. Are there plans on upgrading to LineageOS 15.1 or even 16?

 

[highwaystar_ru]

This is great - thank you @highwaystar_ru for your work. I'll test it on my TB-8704X today. Are there plans on upgrading to LineageOS 15.1 or even 16?

Yes, I'm planning to integrate it with https://github.com/lenovo-devs and build Lineage 16.0 soon. There will be not many updates on 14.1, I will upload one updated build today, found that current is incompatible with linked twrp (I tested it only with my own twrp build).

 

[Hemphiz]

Cheers dev. Seen other models getting LOS and felt a little disheartened, you've now changed that

 

[lancebuks]

Cheers dev. Seen other models getting LOS and felt a little disheartened, you've now changed that

I know right? This is freggin awesome

 

[highwaystar_ru]

2019-07-14

• Added more device names to allow to work with different twrp builds (this should resolve error 7 on install)
• Added thermal configuration
• Enabled exfat and ntfs filesystems
• Fixed couple of crashes on wifi only tablet

 

[drizzle123]

Thank you! What's the breakfast/brunch command to build this one?

brunch TB8704

doesnt work.

 

[Phoenix09]

thank you!
I'll hopefully have time to test on my F soon

Sent from my SM-N960F using Tapatalk

 

[kc12]

Flashed this on my 8704x with the latest magisk and beans gapps. It works great. Thank you so much!

 

[swieder711]

Wow. Great to hear about this development.

 

[Hemphiz]

Flashed this on my 8704x with the latest magisk and beans gapps. It works great. Thank you so much!

Would you say I could use it as daily driver?

 

[kc12]

Would you say I could use it as daily driver?

Absolutely. I've been using it without any issues. Battery is good also. The only thing I haven't done with it yet is play games and cast.

 

[lancebuks]

Absolutely. I've been using it without any issues. Battery is good also. The only thing I haven't done with it yet is play games and cast.

Can you check if the device is certified on Play? For example does Netflix show up in the store?

 

[kc12]

Play protect certification

Can you check if the device is certified on Play? For example does Netflix show up in the store?

No, the device is not certified. I am still using Netflix though.

 

[Sage]

This is awesome. Thanks so much! Only question is do I flash now or wait a few weeks for 15 or 16? ?

 

[EggZenBeanz]

Awesome - Thanks. I was stuck on 7.1 anyway as the lenovo Oreo was really bad, I went back to 7.1. Now I'm in a better place, routed and no bloat. Thanks, looking forward to 16!

 

[lancebuks]

Absolutely. I've been using it without any issues. Battery is good also. The only thing I haven't done with it yet is play games and cast.

I agree - works like a charm

 

[Gtxinsane]

You are a hero, we all thought this device was dead.

 

[Acel337]

Having issues with two apps: Rotation app not working with YouTube and Adaway freezes when building host files, forced to used power button to restart tablet.

Everything else is working.

Thanks for supporting this tablet model.