yashsingh1/xdaforums huggingface dataset:
[Thinkpad Tablet Android Development] ashu.droid:
Installed the rom successfully. There are some issues like:

1) unresponsive touch while scrolling and clicking sometimes.

2) in the camera app the half camera button is hidden at the edge.

3) also the gesture navigation does not work perfectly with external launcher like launchair 2.

4) You can't play videos in whatsapp and the default gallery app or any other media app doesn't load thumbnails and items quickly and hangs.

5)the tab struggles to select and highlight the text for copying, cutting etc operations.

The unresponsive touch is the main problem fix this issue asap, while other problems are manageable.

Thank you for your hardwork!!!

---------- Post added at 02:38 PM ---------- Previous post was at 02:30 PM ----------

please resolve my query

If i format my sd card as internal storage and update the lineage os rom manually in future then will my sd card be accessible or be corrupted!!!
[Thinkpad Tablet Android Development] mad4some:
You know, you're post started out as a good feedback post........reporting issues is something that's welcome here. But that "fix this ASAP" crap is not......
[Thinkpad Tablet Android Development] ashu.droid:
I am not here to offend anybody I was only trying to say that an update fixing this issue will be appreciated that's all. And sorry if anybody is offended.
[Thinkpad Tablet Android Development] Ecthelion3:
FYI, I just tried a clean flash using the aforementioned files, but the result is the same. After the reboot the tablet starts in fastboot mode. I would guess that it has something to do with the Universal Disable Force Encryption zip that I am flashing in the last step, because without this it does not start in fastboot but normal mode. But in this case the system shows the LOS loading animation forever and won't finish the startup. Installing LOS 16 using this procedure works fine, but I have no idea how to upgrade to LOS 17.1.

Help would still be appreciated.
[Thinkpad Tablet Android Development] mad4some:
I ended up putting the zips I needed on a usb stick with an OTG cable. Then I formatted data, full wipe, mount OTG in TWRP, flash rom (17.1), flash opengapps nano, magisk 20.4 and it finally worked :D.......although I have to enter a password every reboot and it does a double boot before it finally starts. Oh, and the second of the boots takes awhile and will make you think it's looping :eek:
[Thinkpad Tablet Android Development] oldleaf:
I repeated the same process to load 3 different versions about 10 times. And finally got the lineage-17.1-20210617-UNOFFICIAL-TB8704.zip installed successfully.
[Thinkpad Tablet Android Development] Stolonifer:
Can you tell me if you have Vo-LTE support ?

Cause I don't
[Thinkpad Tablet Android Development] oldleaf:
No. Vo-LTE doesn't work. It changed to "H" when making phone call.

My SIM did support VoLTE on my Samsung S10+.
[Thinkpad Tablet Android Development] Stolonifer:
You know right , someone in comments said it's working for them and I am thinking since then what went wrong !

It was working in LOS16 but now it's not .... Have u tried the pixel experience 10 rom ?
[Thinkpad Tablet Android Development] Pedros97:
Here is the last august 2021 lineage code and security patch update.
[Thinkpad Tablet Android Development] FoRealz:
How did you install this? I was able to install the 2020 just fine, but tried to install the latest from Pedro and it just sits endlessly.

I'm definitely a n00b and took a stock android 8 tab 4 8 plus

I fastboot into twrp and then click install and then select the 2021 download from the post above and swipe and it just sits. I'm not sure what's wrong

Recap, I installed the 2020 version of 17.1 from page 1 of this thread, now I wanted to utilize Pedro's link that includes the security fixes, but I can't get it to install, but maybe I'm doing it wrong, but seem to be stuck on the same screen as oldleaf.
[Thinkpad Tablet Android Development] darknum:
Delete
[Thinkpad Tablet Android Development] oldleaf:
I forgot the exact procedure to upgrade to lineage-17.1-20210617-UNOFFICIAL-TB8704.zip. But I have just successfully upgrade from 20210617 to 20210820.

Here are the steps:

1) power off the tablet, Vol-Up + Power to boot the recovery screen.

2) factory default and boot to bootloader

3) with USB cable connected, run

fastboot boot twrp-3.2.3-0-tb_8704x.img

4) in TWRP, "advanced" -> "fix contexts"

5) back to main screen, wipe data

6) back to main screen, install lineage-17.1-20210820-UNOFFICIAL-TB8704.zip from SDcard

7) back to the last screen, install BiTGApps and reboot
[Thinkpad Tablet Android Development] theMunstrrr:
Running into Bluetooth issues with the 20210820 release (first time installing) on a Lenovo TB-8704V. Anytime I attempt to enable Bluetooth, "Bluetooth keeps stopping". Bit of a noob to this, but happy to debug -- let me know what you need! Thanks!
[Thinkpad Tablet Android Development] oldleaf:
Observed the following bugs with the 20210820 release.

1) screen timeout doesn't work (display stay on inside apps like Chrome)

2) double-tap to on/off screen doesn't work
[Thinkpad Tablet Android Development] hkopenc8312068:
Can't download
[Thinkpad Tablet Android Development] Hnktc:
+1
[Thinkpad Tablet Android Development] kc12:
Thanks for the August update.

I dirty flashed it over the April update without issues.
[Thinkpad Tablet Android Development] kc12:
I have voLTE support. Using freedomPop/at&t . I'm on 08.20/2021 build. Security update 08/05. No issues with voLTE.
[Thinkpad Tablet Android Development] dbjungle:
Did anyone ever get bluetooth working on TB-8704V? I can install it fine and it is mostly usable, but bluetooth is not functional.
[Thinkpad Tablet Android Development] hkopenc8312068:
I can't use 4G LTE in 20210820 build. 4G LTE is working on 20210310 build. So I am using 3G WCDMA now. :(
[Thinkpad Tablet Android Development] Pedros97:
Here is the last november 2021 lineage code and security patch update.
[Thinkpad Tablet Android Development] smallerstone:
I just directly installed by TWRP.

Can use, good, thanks.
[Thinkpad Tablet Android Development] mame73:
wifi not sleep when screen off

I set "adb shell settings put global wifi_sleep_policy 0" or 1

But wifi still not sleep

Please help me

THANKS！
[Thinkpad Tablet Android Development] hkopenc8312068:
Cannot use Miracast on TV and Windows 10. Please fix it! Thanks!
[Thinkpad Tablet Android Development] alceasan:
I'd like to try this ROM. Can anyone tell me if the kernel is build with enforced selinux? This gives me a lot of problems with some apps on other ROMs.
[Thinkpad Tablet Android Development] swieder711:
Updated from June to November release and rerooted via Magisk 24.1. Did it all locally with twrp 3.4.

Thanks.
[Thinkpad Tablet Android Development] mistersixt:
Could someone please compile and upload a version with the latest security updates?

Or... if there is somewhere a "compile walkthrough" ... I am happy to do it on my own.

Kind regards, mistersixt.
[Thinkpad Tablet Android Development] Hnktc:
don't let this project die, please :(
[Thinkpad Tablet Android Development] dave457:
It was DOA
[Thinkpad Tablet Android Development] Hnktc:
Any guide to update lineage to the latest patch?

Maybe i'll try to made it myself..

It's a too good rom to make it die :(
[Thinkpad Tablet Android Development] Hnktc:
nobody to update rom or teach how to do?
[Thinkpad Tablet Android Development] dave457:
That's a two part question

1. "update rom" I doubt it very much as this is an old relatively cheap tablet so don't hold your breath

2. "teach how to do?" See the opening post on "How to Install" and Google what you don't know.
[Thinkpad Tablet Android Development] kc12:
He's not asking how to install the rom, he's asking for instructions on how to update the ROM's security patches. He wants to learn ROM development of security patches, not installation.
[Thinkpad Tablet Android Development] kc12:
You could do what I did... I updated to LOS 18.1. It has an April security patch. Runs pretty good. Unfortunately SIM cards can't be read, but security is current.... 🤷‍♀️
[Thinkpad Tablet Android Development] Hnktc:
1) i know, but the rom is fast and stable,

2) i mean update rom with new security patches, not update the rom with newer version
[Thinkpad Tablet Android Development] Hnktc:
Yeah but it doesn't read fingerprints to unlock..
[Thinkpad Tablet Android Development] kc12:
I have the 8 plus and the fingerprint reader unlocks most of the time for me. I haven't tried using it on apps yet. If you try it, Install it over stock using the OP's instructions.( maybe it will make a difference with the fp reader. 🤷‍♀️.

Don't use open gapps you'll bootloop.
[Thinkpad Tablet Android Development] Hnktc:
i used open gapps without problem.. i have charged it, rebooted and it doesn't read fingerprints anymore, only pin to unlock.. that's why i like lineage 16/17, no issues
[Thinkpad Tablet Android Development] kc12:
You have wifi version?
[Thinkpad Tablet Android Development] Hnktc:
yeah, only wifi version
[Thinkpad Tablet Android Development] kc12:
It works that way in both Roms for me. After a reboot you have to enter your pin. Afterwards the fingerprint reader works fine. In 18.1 sometimes after extended sleep you need to enter the PIN. But not always.
[Thinkpad Tablet Android Development] Hnktc:
but it's not the pin the problem, it's the fingerprint scanner stop working.. now, after a reboot, it works again..
[Thinkpad Tablet Android Development] Pedros97:
Here is the last may 2022 security patch and lineage code update.

lineage-17.1-20220520-UNOFFICIAL-TB8704.zip

drive.google.com
[Thinkpad Tablet Android Development] Hnktc:
i know it, project is still alive!!
[Thinkpad Tablet Android Development] Gpqpmz:
Running into Bluetooth issues with the 20220520 release (first time installing) on a Lenovo TB-8704V. Anytime I attempt to enable Bluetooth, "Bluetooth keeps stopping"
[Thinkpad Tablet Android Development] suhridkhan:
If you need Bluetooth to work for 8704V, you need to go back to LineageOS 15. Bluetooth never worked for me on this version of LOS.
[Thinkpad Tablet Android Development] en1gm4:
My bluetooth works only after I upgraded to 8.1 stock rom (Lenovo_Tab_4_8_Plus_TB-8704V_USR_S001026_1906291850_Q1241_QDL_(by_firmwarefile.com).zip) before flashing 20220520 (with NIKGAPPS Q).

update: dialer fails to make calls
[Thinkpad Tablet Android Development] MadLadBrad:
Hi,

I got a 8804 model and a 8703 model both running on Lineage OS. Works great really good Rom I love using them.

It's just that I noticed one thing recently, when watching Youtube on the 8804 model I can choose 4k resolution, while on 8703 there's only 1080P.

I then use the Codec Info app to check supported codec on both devices. On 8804 it has hardware vp9 decoder that can do 4k30fps. But 8703 model only has software decoder for up to 1080p60. In my test 8804 model can play 1440p 60fps no problem while 8703 have no option for 1440p or higher even with Vanced.

Both devices should have SD625 soc. So is it a licence thing or there's actual hardware difference? Anything I can do to get 8703 model to run VP9 HW decode as well, plz let me know

tb8804f with lineage-16.0-20200320-UNOFFICIAL-TB8704

tb8703r with lineage-17.1-20200906-UNOFFICIAL-TB8703
[Thinkpad Tablet Android Development] SD_007:
Hello

I have a Lenovo tb 8704x with stock android 8.1 ROM. I can't understand the procedure properly.

So anyone can please give me step-by-step instructions to install this Lineageos os 17 on my device?
[Thinkpad Tablet Android Development] imacmill:
I'm running into the same issue. Did you ever get Bluetooth working?
[Thinkpad Tablet Android Development] suhridkhan:
I didn't. I have been using LOS15, which is much more stable anyways. I don't know if LOS16 has improved since or not, but it would crash on me sometimes.
[Thinkpad Tablet Android Development] imacmill:
Thank you. I'll give LOS15 a try.
[Thinkpad Tablet Android Development] jinxt:
could someone pls reupload the 20200601-UNOFFICIAL-TB8704.zip rom from the OP, since none of the links to it are live anymore. big love in advance
[Thinkpad Tablet Android Development] Hnktc:
dead project? :(
[Thinkpad Tablet Android Development] Pedros97:
January 2023 security patch https://drive.google.com/file/d/1OqQmuzNjwCZgBnZh0ik9cApUTiV7Z_An/view?usp=drivesdk
[Thinkpad Tablet Android Development] Hnktc:
You are the hero we need!!!! I have sent request to download, thanks!
[Thinkpad Tablet Android Development] Sardorkar:
Hello, i downloaded and installed the new zip file with TWRP 3.4. But it's not booting. There is even no Android boot animation. Does it work for somebody else?

Update: i reinstalled the image and magisk + cache delete and i plugged in a charger and it was booting finaly. i don't know what exactly solved the Problem. Maybe the connected charger. As i remember, some others had the same problem, that the tablet was only booting with or without a connected charger.
[Thinkpad Tablet Android Development] kc12:
I flashed it a day or so ago and it works great. I did a clean install after formatting data, full wipe, install w opengapps. Takes a few minutes to boot .
[Thinkpad Tablet Android Development] Hnktc:
me too, no issues here!
[Thinkpad Tablet Android Development] tvsr:
Hello!

Installed lineage-17.1-20220520-UNOFFICIAL-TB8704.zip

Why is the Internet speed over WiFi about 2 Mbit when Bluetooth is turned on, and about 30 Mbit when it is turned off?

The screencast is not working yet. The wfd service immediately freezes and a black screen appears on the TV.

On the Pixel firmware, it worked, but slowed down.

Can we do something about this on our device?
[Thinkpad Tablet Android Development] swieder711:
Would love to see an updated security patch for LOS 18.1
[Thinkpad Tablet Android Development] k00r:
8704X 8inch

not work micro. latest stock + opengapps arm64 10 full. without root
[Thinkpad Tablet Android Development] kc12:
Does anyone have a working Netflix for this? If so which version, please.
[Thinkpad Tablet Android Development] jotade:
Hi I have Netflix working 7.12.0 build 12 35461 and Bluetooth with no problems. Mine is TB-8704V
[Thinkpad Tablet Android Development] Sage:
glad to see this device isn't completely dead! thanks for the efforts!
[Thinkpad Tablet Android Development] Hnktc:
Can we hope in latest lineage update and google patch? Latest update has wifi issue :(
[Thinkpad Tablet Android Development] SkoreK89:
I have no WiFi problems.
[Thinkpad Tablet Android Development] Hnktc:
mine doesn't recognize wifi home anymore
[Thinkpad Tablet Android Development] andycowman:
Hello - I feel like a bit of a prat here as I have managed to happily run my tablet on lineageOS already for a few years but I didn't have GAPPs of any sort. Anyway I thought I would refresh it.....

and some how I have made a hash of it as no matter what I do its sitting on the LineagoOS logo. I thought maybe something was wrong with the image I was using so tried the 18 one that exists, then the 16.... so that makes me think it is something I have done!

So where is it right now. Sitting on my desk. In disgrace!

I have tried wiping everything and starting again a few times, tried wiping just the cache and reinstalling, tried just lineageOS and not GAPPS at all and everything comes to the same issue. I have even re flashed TWRP several times :s

Any suggestions would be happily received as I now am just going in circles!

Currently using:

Lineage-17.1-20200906-UNOFFICAL0TB8704

TWRP-3.2.3-0-tb_8704x
[Thinkpad Tablet Android Development] andycowman:
If anyone looks at this again.... I got it back to factory ROM using https://support.lenovo.com/gb/en/downloads/ds101291-rescue-and-smart-assistant-lmsa

Now having another go at breaking it :)
[Thinkpad Tablet Android Development] Ecthelion3:
Thanks for the information. I have the zips on a micro sd card, which should also work. The difference in your approach seems to be formatting of the data partition. Not sure, though, whether I am going to take the route you chose, given the caveats you mentioned. But at least I have another variant I could try.
[Thinkpad Tablet Android Development] WiteWulf:
So I've been running the second build since Monday on my 8704f and it's been pretty much faultless, tbh. Battery life seems better than 16, the tablet feels faster, too. I've not experienced the problems mentioned by some with selecting text, but am seeing the issue with offset button the camera app (don't care though, camera is awful on this device anyway).
[Thinkpad Tablet Android Development] lancebuks:
Passing SafetyNet

Hi,

In case anyone is interested - I used Google Pixel 4 XL (10) fingerprint to pass SafetyNet.

I also changed the fingerprint BEFORE logging into google that way you'll be certified. If you access the store when using the default fingerprint your device will be uncertified and may stay uncertified after tweaking the fingerprint, there are ways to fix that by logging out of your google account and clearing caches but the way that works for me is to tweak the fingerprint before signing into google the first time and download Netflix.
[Thinkpad Tablet Android Development] DipXDA1:
mic not working

Hi there - anyone know why my mic wouldn't be working anymore using this with a clean install?
[Thinkpad Tablet Android Development] WiteWulf:
Thanks for the above. I definitely accessed the Play Store *before* changing the fingerprint, hence the problem not being able to install Netflix.

I just deleted the Google account from my device, cleared storage and cache for Play Store and re-added the Google account and now I can see Netflix when I search the store :good:
[Thinkpad Tablet Android Development] druebner:
Hi there

first of all: Thanks for your work and sharing this ROM, I really appreciate this!

The 2020-06-01 Version is running fine on WiFi Version besides a little bug: GPS is not working on my device (no GPS e.g. on Google Maps cant find my Position), anything else is working fine so far. IT would be great if you could fix this.

The SafetyNet Pass was already mentioned, for those who are new to this:

- do not login with your google account, this should be done later

- in Magisk --> download and Install: HidePropsConfig & Busybox for Android NDK --> after Installation of both Restart

- download a Terminal (I recommand Termux 0.94)

- go to the Terminal an type in: su (do grant SU to this app) and afterwards type in: props

- choose: "1" - "f" - "6" (Google) - "10" or "15" (Google XL device) - "7" (Android 10) - "y" - "y" --> system will reboot and SafetyNet ist passed

- login to your Google Account and everything should be working
[Thinkpad Tablet Android Development] WiteWulf:
Sorry, I can't help you, but the mic is working fine on my tb8704f with the latest release on (clean install).
[Thinkpad Tablet Android Development] DipXDA1:
No probs mate - will keep on trying to find a solution :)
[Thinkpad Tablet Android Development] druebner:
Update: GPS is working from time to time, but GPS position can't be fixed. This seems to be a general bug in LOS 17.1.

Location is Germany by the way.
[Thinkpad Tablet Android Development] ashu.droid:
You should reflash TWRP and then fash the rom again. This method worked for me.
[Thinkpad Tablet Android Development] DipXDA1:
Thanks Ashu - unfortunately hasn't worked for me - amusing as mic only works with stock rom or the initial 16.1 lineage rom - anything else and its a no go - but as tablet used mainly for media consumption I may just go with Lineage 17.1 and live with it for now :)
[Thinkpad Tablet Android Development] ashu.droid:
Are you able to view videos in whatsapp? And does the thumbnails and media load quickly in any media app like gallery or anything else because in my case the thumbnails and videos doesn't load nor I am able to view videos in whatsapp.
[Thinkpad Tablet Android Development] DipXDA1:
No sim so no Whatsapp mate but otherwise I have no issues like yourself with thumbnails - could be they are on an sdcard and reading at a low speed?
[Thinkpad Tablet Android Development] lancebuks:
lineage-17.1-20200607-UNOFFICIAL-TB8704

Hi, latest build available with the June security patch.

All I did was sync the repo and build - the latest patch was added by the LOS team.

Dirty flash and clean flash was fine and everything seems to be working.

Download lineage-17.1-20200607-UNOFFICIAL-TB8704.zip

MEGA
[Thinkpad Tablet Android Development] dahawthorne:
A dirty flash worked fine for me too.

I had a few anomalies. TWRP 3.3.1 couldn't see anything at all on my internal SD - totally empty, 0 bytes. I recopied the ROM to my external SD and it worked fine, though with quite a few "Unable to mount" red-text errors, which were clearly spurious, as on reboot everything seems fine. My Solid Explorer shows a full set of data in internal storage - only TWRP File Manager couldn't. Strange.

Thanks again for keeping us up-to-date.
[Thinkpad Tablet Android Development] WiteWulf:
Nice one, dirty flashed with cleared cache and dalvik, went straight on with no messing :good:
[Thinkpad Tablet Android Development] turiato:
Both clean and dirty flash resulted in reboot to recovery unless the tablet (TB8704F) is connected to power supply.

I go back to 20200601 that works with no problem at all.
[Thinkpad Tablet Android Development] phynix5800:
I'm having this exact problem both with this, as well as with the LOS 16 version:

(TB8704F -

latest stock version installed that is booting fine

) in TWRP format Data, factory reset -> install LOS ZIP (nothing else, no GApps) -> boot animation will be shown infinitely and tablet won't finish booting.

The tablet will boot, when I restore the stock system. I have used the TWRP version that is linked in the OP.

Any suggestions? Thanks!
[Thinkpad Tablet Android Development] dahawthorne:
I've read that TWRP format isn't 100% reliable. I know nothing of the detail or truth of this, it's just a comment I read, I believe from [MENTION=3383960]Elektroschmock[/MENTION], who knows what he's talking about.

An alternative to TWRP format is to start bootloader (the green robot screen) and use the command fastboot format userdata. Then try installing again. Also try using [MENTION=4567848]lancebuks[/MENTION] TWRP 3.3.1, which I used this morning successfully (see my comment 4 above this one).
[Thinkpad Tablet Android Development] phynix5800:
Thank you very much, you have been of big help! Formatting Data with the fastboot command didn't help but doing everything from within Lance's TWRP version worked instantly! IMO this is worth being mentioned in the OP, so ppl don't have to waste hours trying to get the ROM working like I did.

Also thank you [MENTION=4567848]lancebuks[/MENTION] for creating the updated recovery version!