yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
Problems with last Nexus/LOS version

Hi,

I dirty flashed the zip. After reboot my µSD (exFAT) was flagged as corrupt. I had to copy its contents to my PC, and format it on the Tab.

Then I installed Magisk 20.1 with TWRP. After system reboot the Tab was stuck all night with the big rainbow G on the screen.

I tried with Odin, same problem after installing Magisk.

I flashed Magisk uninstall, then the Tab could reboot OK.

Btw, with the LOS version, Magisk Manager only offers to patch the boot image or download the zip, not the direct install as before.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
I don't run with Magisk, so I'm hoping someone else can answer this question. The OEM boot and recovery partitions are modified in the same way, so i can't fathom why LOS GSI would behave differently than AOSP GSI.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Did you backup with TWRP before dirty flashing? Why not just restore the backup? Why use Odin? Personally, I do a modified dirty flash when updating. I use advanced wipe and wipe dalvik, chache and sytem. All of the apps and settings are in the data partition, so you don't lose anything by wiping system. But you DO avoid a lot of problems. Doing that, I had no problems with the latest version.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
The update script is calling block_image_update() to replace the system, vendor and product partitions, so wiping them shouldn't make a difference. Wiping cache makes a lot of sense, though. In fact, I just added it to the script.

I did a dirty flash in TWRP from Nexus_Stock_T510XXU1ASEF-20190906 for this last release, and also had no problems. Scrolling is noticeably smoother too.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
To me, the key word in that post is "shouldn't". I'll agree, it shouldn't. But wiping it takes no time at all and doesn't hurt, so why not?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
I had a TWRP backup on my µSD. I got disracted by the fact that the OS would not read it.

Btw, does the LOS ROM support the exFAT file system ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I have both the 510 and a 580. With the 510 I only have a 16gb FAT 32 ext SD, because I only use it for TWRP backup. But I put in a 256gb exFAT card to test it. TWRP read it OK. Nexus said it was corrupt. I DID NOT attempt to fix. Booted back to TWRP and it was still OK. Same card in my 580 with RR 10 read it both in TWRP and booted to system. I have some new 256gb cards on order and I'll test one of them by formatting in the 510 and see what format it uses. I doubt that exFAT will be used or that the issue will be fixed in the ROM any time soon.:(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
The LOS based ROM formats in VFAT. :rolleyes:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
First off, what's with the rolleyes? Second, I just inserted a 32gb SD, formatted fat32, into my 510 and it read it without a problem. Used the 510 to reformat it and it formatted fat32 and NOT VFAT. And, my 580 running RR 10, which is based on LOS, DOES handle exFAT. And I'm betting that at some point, the 510 will be fixed to handle exFAT. :p
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Master X:
Google apps

So for some reason when I updated via zip, all the google apps kept crashing.

Luckily I Backed up via TWRP. Restored and back to normal.

Should I update via Odin instead?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
NO!! What did you wipe prior to flashing via TWRP? What are you currently running and what are you flashing?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
I formatted my SD under Android. If I boot TWRP, select Repair File System, it shows VFAT.

I have a 585 under RR Pie, exFAT is supported. Same for the stock Nexus ROM. Looks like no exFAT support is an issue for all LOS/GSI ROMs, and not a high priority item.

I need exFAT because I have large video files, I'm going to revert to the stock based Nexus ROM until this probem is solved. IMHO the lack of exFAT support should be documented in the first post of this thread.

Ironically ... I had TWRP backups on my exFAT card. I made a copy to my PC before reformatting my SD, then I tried to restore them via MTP. It failed because some files in the backups are over 3GB.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Master X:
I was dirty flashing the newest version of Nexus Stock over top the previous version.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
If you plug the SD card into the PC, format it exFAT, copy the files to it, and then put it back in the tablet, boot to TWRP, you should be able to restore the backup. TWRP reads exFAT even if the ROM doesn't.

---------- Post added at 12:15 PM ---------- Previous post was at 12:09 PM ----------

You didn't answer my question but if you "dirty flashed", you apparent didn't wipe anything. Before flashing, you need to go to Advance Wipe and wipe cache, dalvik/ART and sytem. NOT DATA! Then flash both the new ROM and your chosen gapps, making sure the gapps is the right one.

You only use Odin when flashing back to a Samsung stock ROM.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
That's what I did ... big waste of time !
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Then it isn't a problem with the file size. There is something TWRP doesn't like about backups that have been copied. I've run into that problem in the past and I never did solve it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
AFAIK FAT32/VFAT supports file sizes up to 2GB; exFAT and NTFS do not have that limitation.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] s3baot:
Hello. Does this rom works with t510 3gb version? ( SM-T510NZKFNEE ) Thanks :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] grunge888:
Is there a way to make the double tap work?

I’m using my tablet for my home automation and I haven’t flashed it. I need a double or even a single tap to wake my screen when it’s off :/
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
Hi,

There is a Magisk module which pretends adding exFAT and NTFS to AOSP ROMs.

Did anyone try it on this one ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] July_Melody_86:
This is similar to the problem that is happening to me. I just flashed the Nexus Rom over the stock firmware on my SM-T510. Now, I cannot create folders and all of the folders on the internal storage SD card look weird. I would be hugely, hugely thankful for a step-by-step on what is meant by re-flashing and resetting? What do I go to in TWRP to initiate a complete and total wipe, allowing access to the internal storage?

I appreciate you guys for your help! :D
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
That's a bug with both the LineageOS and AOSP GSI builds on this hardware. Even setting the "Samsung Features->Enable double tap to wake" option on Phh Treble Settings doesn't seem to fix it. I've had an open issue (#663) to track the bug for over two months, but it hasn't gotten much attention. Please feel free to vote it up in priority.

I'm guessing it's not a difficult fix, since double-tap to wake works fine in TWRP.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] grunge888:
Cool thanks for the information. Hope it will be fixed soon
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Be aware that doing this will erase EVERYTHING on the data partition. Including any pictures, videos/audio recordings, downloaded files etc. Boot to TWRP and select Wipe. Go ahead and swipe to Factory Reset. Now tap the "Format Data" button. When it asked if you want to continue, type "yes" and not just "y". Reboot to recovery and flash Nexus. You only need to do this once to un-encrypt the data partition.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] philsner:
First of all thank you very much providing this bloatfree experience!

Sadly I have an issue installing/updating apps through the playstore: It simply doesnt work. Google doesnt provide any error code, just that app xyz is not able to update / or can be installed. Any workaround on this? (I already tried deleting cache / data of the Google Play Store and restarting)

Thanks in advance!

Edit: Just found out I have the same encyption issue as stated above!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] July_Melody_86:
Thank you so much! Everything is awesome now! Excuse me, because I'm new to all this, where can I go for instructions on how to root this device?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Just use TWRP to flash Magisk v20.0.zip
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
No exFAT support (Solved)

For those who want to use SD cards larger than 32gb I found this site http://www.ridgecrop.demon.co.uk/index.htm?guiformat.htm

It allows you to format SD cards larger than 32gb with FAT32 instead of exFAT. I just used it to format a 256gb card and then put the card in my T510. /Setup/Storage now shows I have a 250gb FAT32 external card. I haven't tested it yet by copying a lot of data to it, but I'm going to do that now. I'll let you know how it works.

Update: I have a Karaoke library of 50,000 songs taking up about 180gb of disk space. Copied that to the SD card and it appeared to copy at about the same speed as when formatted exFAT. Put the card back in the T510 and was able to read all of the data. Booted to recovery and backed up to the card without a problem. My final conclusion is that this solves the problem of having cards larger than 32gb.

edit: One comment. This solves the problem of cards larger than 32gb, but there is still the limit of a max 4gb file size. But this doesn't effect backing up in TWRP. The total backup size can exceed 4gb but none of the individual files in the backup exceed the limit.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kieffey:
I did notice the face unlock does not work either
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Aurey24:
Guys I've encountered a problem where my tablet just stopped booting into the rom after I turned it off one night and put it on the charger. I can't boot into the rom anymore but I can boot into download and recovery mode, tried wiping but that's not working either
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
So, there's a known bug where the device hangs when charging after a cold shutdown, but I've always been able to reboot with a hard reset (Power + Vol Down).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] leonkernan:
Same, I've had to do that a couple of times when I've forgotten to boot it before plugging in.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Awesomeslayerg:
Glad to see you're still working on this :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Triscuit:
Did you say at one point you had Android 10 booting for the SM-510? I've been checking the thread everyday hoping it shows up lol Still running your rom on my tablet since it's so much better than stock.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Yes, but there have been several problems which have prevented a release. Specifically,

SetupWizard is broken

OpenGApps 10.0 betas crash during install

Only back button works on navigation bar
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Triscuit:
Ah ok, yea those are deal breakers lol
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TiffanyTracy:
exFAT Support

Awesome ROM, thank you so much for all your work!

Is there any way exFAT support could be added? It's pretty important to me, I'd be willing to do whatever work is necessary if it's possible and you could point me in the right direction. Thank you :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
What do you need it for? I found a way to increase the ability of FAT32 to handle partitions sizes up to 1tb, but it still has a 4gb file size limit. You can still use it in TWRP for backups larger than 4gb because backups don't have any individual files larger than 4gb.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TiffanyTracy:
A couple different things. For one, I'd like to be able to transfer my 4k movies onto the microSD card, and those range from 7 to 17 GB. More importantly, I'd like to be able to use my external hard drive with my laptop as well as the tablet. It's formatted exFAT because it's my main storage source and I have many files over 4GB.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] milsabords:
There is a Magisk module which adds exFAT support to AOSP ROMs.

If you test it I would be interested to read your feedback.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TiffanyTracy:
I tried it already, it fails to install and says that it only supports Oreo 8.1
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Frankly, I'm surprised that it isn't already working. Samsung implements it's own SDFAT, which supposedly implements Microsoft's exFAT and I've confirmed enabled in the kernel. The system GSI also includes the fsck.exfat and mkfs.exfat binaries, so it's not clear to me what's wrong.

UPDATE: You could try swapping out the original vold binary from the Samsung OEM system image. In theory, that could do it. Just be sure to keep the same file permissions and SELinux context.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] July_Melody_86:
Wonderful! Everything is working well. Once rooted I was able to install a battery charge limiter and Viper4android. Question to any readers: because we are all browsing a conversation about a customized ROM, only if you want, consider recommending an equalizer profile that replicates whatever audio voodoo Samsung brewed up in the original firmware.

I have installed v4a. Can anyone point me to some Viper4android profiles claiming to be as good as stock?

Thanks, bunches!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] SMOKEmcoc:
dang it! i updated my firmware and accepted the prompt about not being able to downgrade on accident!!! looks like root is dead on my tablet for now.... :(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] manny73:
Congratulation for your great work.

Do you think that you will resolve the bug of charging? Do you working on it and you have an idea from come the bug?

Thanks

Manny
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Laykun:
[IMG="Logcat"]https://i.imgur.com/g7Dha4c.png[/IMG]

GPS does not appear to work.

Looks like a simple file permissions problem. Was able to fix this myself just be giving the files the right owner user:group.

Was this:

Changed it to this:

Those extra files just seemed to show up and I had to fix those too.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
Can you change the base to any other gsi with some extra customization ?

Even though the rom is great , its missing a lot of customization features.

Just a suggestion.

Appreciate your hard work!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
No, I like my system clean, and LOS is about as far as I want to go with extra customization. However, you can easily swap out another GSI.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Very strange, since GPS seems to be working fine for me. Anyone else having GPS issues?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] yozart:
Hi,

thank you for your awesome rom. I'm trying to replace the bootanimation.zip with my company logo and tried to do it in /system/media but it seems that file is replaced immediately with previous one.

Can you tell me how to proceed please ?

Regards
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
There's nothing I'm doing that would restore any file in the system partition that you replace. My guess is that you didn't successfully replace the file. Have you tried deleting it first, then copying over the new one? (Also, ensure you're setting the file permissions and contexts correctly.)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] yozart:
That's my point, I can't replace the file because it's being replaced right away by the previous one. I tried to set the permissions on this file to 664 but it doesn't change anything. There must be another location where it's being copied from :(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] yozart:
So, it seems that it must be performed through TWRP and not through file explorer in Android

My remaining concern is that my bootanimation is not showing but this is another problem.

otherwise is there an easy way to modify the "Nexus" Splash image at boot by the one of my company ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uknetfreak:
Gmail Push Notifications Not Working

I have installed this ROM fine, however, for some reason I cannot receive push notifications for my Gmail in the Gmail app or indeed, any other such as Aquamail or even Outlook. Other push notifications seem to be OK. Can anyone advise please? Thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
That's just in the param.bin, which is simply a .tar archive of JPEG image files.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ghmcipriano:
Hi everyone. Could you guys do me a favor? Try to install DJI Fly app on the tablet running this rom and see if it really installs, I'm having trouble to find a rom that runs 64bit apps. Thank y'all.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
This custom ROM is 32-bit, like the original OEM firmware. It won't run apps intended for 64-bit architecture. However, SM-T510 does run on a 64-bit kernel and I've included the 64-bit Binder ABI, Android’s inter-process communication (IPC) mechanism.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ghmcipriano:
Hey! You mean install this rom with a 64bit kernel? Is it possible to explain it? I've been out of digging on ROMs since I got my first galaxy s2 so I forgot almost everything. Thank you
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
It's already running on a 64-bit kernel, and I've built 64-bit TWRP for the device and it's run fine. The problem is that the OEM vendor partition is still 32-bit, so a 64-bit GSI doesn't boot. The ARM32 AOSP and LineageOS builds with 64-bit binder ABI do, however, and that's what I've been using until I can get a legitimate 64-bit vendor image. As for explaining 64-bit binder, the best reference I've found is here and it's a little dated. My understanding is that the app needs to be authored for a 64-bit binder ABI in order to play well in a 32-bit environment, and I've found that few of them are. For example, I tried to bring over the new 64-bit Google Recorder app, and couldn't get it to work.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ghmcipriano:
Yep, the app want in my tablet doesn't even install and I bought it basically intended to fly the drone. What is your advice for me?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Well, you can hope that the upcoming Android 10 builds for the SM-T510 will be 64-bit. In the interim, it might be possible to port a 64-bit vendor partition from a similar Exynos device like the Galaxy A30 or A40, but I just don't have the time. Anyone willing to do that?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ibanezbass:
I’m going to work on porting the 64 bit libraries into the stock rom. Once I get it working, I’ll share my findings with you.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] s3baot:
Hello. I have this rom and dji flight 4 and dji pilot apps installed fine.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ghmcipriano:
Do you have DJI FLY app? That one specific for mavic mini? I could install DJI GO 4 but I could not do the same with DJI fly
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] s3baot:
My play strore doesn't even show that app whit this tablet.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ghmcipriano:
If you don't mind could you try downloading directly from DJI website?

https://www.dji.com/mobile/downloads/djiapp/dji-fly
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] yozart:
Thanks, I was able to find it and change this picture. Now, I'm getting this error when trying to flash with odin :

<ID:0/007> File analysis..
<ID:0/007> FAIL! LZ4 is invalid

I used peazip to create a tar file of what I extracted from param.bin and renamed it "param.bin"

Then I used command : lz4 param.bin param.bin.lz4 to create the LZ4

Finally, I made a Tar with all other lz4 to recreate the TAR file and tried to flash with odin.

==> Answer to my own question (sorry for this)

https://xdaforums.com/galaxy-s9/help/how-to-compress-samsung-images-lz4-t3844760
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] s3baot:
No, it wont install it :(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
could you maybe guide me through that process?

is it just flashing another gsi image on top of this ?

sorry for noob question. I have zero experience with treble and GSI .

thanks a lot!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Yes, that's exactly it. You just have to find a 32-bit build that's system-as-root (ab), which is the challenge. For example, AospExtended doesn't build ARM32 AB, despite it being one of the four official Android Pie GSI build targets. There just aren't many 32-bit devices out there anymore, and so most custom ROM developers don't bother.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
I did figure it out and am running Descendant OS atm.

Any GSI with ARM BINDER64 AB will work with ours.

Could i request you to add some features to our kernel or guide me towards a tutorial that can help me set my foot into this as i wanna add some features to our device kernel such as bioshock or lionheart governor and other things that are present on the custom kernels of the other devices i use.

Only if its not too much trouble.

Appreciate all the work youre doing for our TAB!

thanks a lot!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
Hey!

Goood NEWS! You can run A64AB images on our tab .

After flashing your latest rom i tried out Descendant Pie which was ARMAB.

Now i've flashed the Unofficial Android 10 HavocOS A64AB image and its working ,although a bit unresponsive at times.

The GSI images with arm - arm64 - binder arch are working if you flash the A64AB images

Thought i'll let you know !!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
i F*CKED UP

idk what i did during the last flash but now no rom is booting.

TWRP nexus stock doesnt work

odin tarball of nexus stock doesnt work either

it just shows the nexus splash screen and then the warning about unlocked bootloader and waits for me to press the power button after which it just reboots back into the same thing and the cycle keeps repeating

HELP ME PLS!!!

:crying: :crying ::crying:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Isn't A64 just another way of saying ARM32 with 64-bit binder? That's what I've been using all along.

BTW, [MENTION=1915408]phhusson[/MENTION] maintains a very thorough list of custom GSIs here.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] phhusson:
Yup

I'm not the one maintaining it, see page's history :P
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UlOlLyfZ:
Fixed it by flashing stock OneUI again

---------- Post added at 01:07 AM ---------- Previous post was at 01:04 AM ----------

Didint know that what A64 meant

Thats the list i use to search for GSIs ,although some download links do not work as the file doesnt exist anymore .
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ibanezbass:
I've got kernel source that I added overclocking and enabled hidden governors. I probably could add any governors that you'd like. I've only confirmed it to work with the stock rom though.