yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
This might be a silly question, but I have to ask ... are you sure the battery isn't flat?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Completly FULL of charge... Last time was able to see it on the screen..
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
OK, last try: turn the device OFF completely. To do this, plug it into a charger, then hold Volume Down and Power for 10 seconds or more. With the screen blank, you can't tell whether it's shut down, but if you hold for at least 10 seconds it should be off. Leave it alone for 10 minutes or more, then see if it will turn it back on (the Samsung boot screen should come up, if nothing else).

One of my Samsung devices got into a state rather like you've described when I was first trying to install LineageOS on it. I thought I'd bricked it, but powering it off completely brought it back to its senses. It is worth a try. Note that it has to be plugged into a charger (or powered USB port) or it will simply restart, not turn off and stay off.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Got nothing...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
Well, I've run out of ideas. :(

@retiredtab - do you have any suggestions?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
buy a JIG dongle
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Never heard of that thing before! Which model is compatible with SM-T350 ??
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
An usb jig is simply a resistor on the end of the usb cable. See

USB JIG to Give Life to Your Bricked Mobile

USB JIG to Give Life to Your Bricked Mobile: When your Samsung Android mobile was bricked (soft), reflash the rom is the only option to recover the mobile. To reflash with new rom, you have to boot your mobile in download mode using combination of key (Mostly Volume Down + Power + Home).…

www.instructables.com

You can make one or buy one. I have one and I think I bought if off ebay a long time ago for 99 cents + free shipping.

You can also try taking off the back cover of the tablet, disconnect the battery for 5 minutes. While the battery is disconnected, press the power button for 10 seconds to fully discharge. After 5 minutes, reconnect battery and try to get into download mode.

Samsung Galaxy Tab A Battery Replacement

A battery, after a certain period of time, will begin to lose its life span after a charging period. This guide highlights how to remove the back...

www.ifixit.com

If that doesn't work, then you need someone with a riff box or jtag programmer to fix the tablet.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
In your opinion, any 300 Ohms resistance can work with a SM-T350? I'll give a try for sure..
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
300 != 300K ohm. If you mean 300K, then it should be close enough.

Personally, I would try disconnecting the battery first vs the usb jig. It's easier.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Even with a JIG, nothing works...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
It's possible you have another variation of the BOE panel? Something that we have not seen? I don't have any BOE panels so I cannot test.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
I'll send the tablet to you, if you succeeded to do something, I'll pay no problemo...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
What country do you live in?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
You didn't say in a post whether you tried removing the battery cable.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
A very small country call Canada it's just up north of USA...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
No I didn't remove the battery yet.. For this tablet it's just annoying because I've to use a small tool to take it out all around the edges. But I'll do now to see if it can make a difference..
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I solved a couple of what I thought were bricked tablets just be removing the battery cable and leaving it out for 5 minutes. As long as the CPU/SoC gets power, it may be in a "funny" state. Even when the tablet is "powered off", it's not because it's always listening and waiting to react to the power button. Only a complete removal of the battery for a few minutes will the CPU/SoC be truly off.

It's the same as turning off your TV. When you "turn off" your TV, it's merely in standby mode waiting for the user to hit the remote control or press the on button. When you physically removing the TV's power cord from the AC outlet, then it's completely and truly powered off.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Removing the battery change nothing..
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I'm afraid your only option is some sort of riff box or jtag programmer. You might want to try and contact your local makerspace or electronics group to see if anyone has such a tool. Check out the local universities or colleges?

I don't have any of those tools so sending the tablet to me won't help.

Flashing at any time has risks. When developing 17.1 for the SM-T350 I took the most risk out of anyone. I easily flashed over 100 builds to fix bugs, stuck at boot animations, etc. For 18.1, if it ever works, I can easily see another 100+ builds in the future.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
i am not sure, thought this device is Exynos chipset (although someone posted about Qualcomm). you can unbrick in (EDL) emergency download mode if you manage to short-circuit test points on PCB. that requires Qualcomm HS-USB QDLoader 9008 Driver, QFIL and proper Samsung signed factory loader (firehose programmer)

https://github.com/alephsecurity/firehorse

https://android.stackexchange.com/q...cant-go-to-recovery-mode#comment305555_224235
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
Can tell if it's a Qualcomm or something else.

Here the picture of it ..

Meet Google Drive – One place for all your files

Google Drive keeps your files backed up and easy to reach from any phone, tablet, or computer. Start with 15GB of Google storage at no cost.

drive.google.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
SM-T350 is Qualcomm snapdragon 410.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
As of this writing on Feb 7, 2021, there has been 18 downloads of the T350XXU1BPI2_bootloader_only. tar.

I downloaded 1 so that makes 17 people with the BOE. So far, 2 people have reported problems doing the above procedure. I assume, then it works for the other 15 people otherwise they would have said something.

We don't know why 2 people have problems flashing only the bootloader, but given this, you may want to flash the full stock rom so that the tablet behaves like Marshmallow stock in all respects. Then make sure it boots Marshmallow. If that is good, then flash TWRP 3.3.1, reboot into TWRP and flash your custom rom.

For the 2 that have reported problems, it's also possible that flashing the entire Marshmallow rom would have yielded the same results. Flashing, always, is risky.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fire_qc:
I send the tablet to a Tellution (local shop), the guy try Octopus JTAG box and got nothing!! He said the only option is to change the mainboard. If not using like a frisbee or coaster...

Incredible, flashing ABOOT cause this tab is completly DEAD...

Any ideas guys??
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Sounds like it's completely dead if a hardware JTAG box sees nothing.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
The mainboard must have been physically damaged somehow, but flashing anything should not actually be able to do that kind of damage. These boards have a lot of protection built in, and in any case the process of flashing doesn't generate power conditions that the hardware can't handle.

There'd have to be something else involved, such as extreme overheating (from a faulty battery, for example) or exposure to high voltage (from a faulty charger, for example), or some component just choosing this moment to fail. The latter can certainly happen, more commonly when the device is new / hasn't been used much / has recently been repaired.

What's the history of this device? How long have you had it? Was it new when you got it? Was it working well with the Samsung ROM before this?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
@lpedia he messed up aboot. of course this caused brick. see post #641

please clarify: on which stage bootloader decides to enter 9008 edl mode?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
Does it mess up to the extent that a JTAG box can't do anything with it? I thought that would imply hardware damage ...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
don't know what JTAG box is or how this can even work over usb. JTAG (usually?) requires desoldering eMMC and expert knowledge / datasheet for the flash chip pin out. i doubt this can be done in regular service center. such service usually is more expensive than (used/second hand) replacement device.

according to this aboot implements download mode, so flashing via Odin can't work. But PBL will fallback to EDL if SBL failed to initialize aboot

https://alephsecurity.com/2018/01/22/qualcomm-edl-1
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
The Octoplus JTAG box - the type used on this particular device by the service centre the OP took it to - claims it can flash/decode/repair a wide range of LG and Samsung devices, including these Galaxy tab models. The service centre tech said that box couldn't get anything from it, and that the only option was mainboard replacement. If that advice was correct, I do not see how this could have been caused by flashing aboot.

The PBL should bring up EDL mode if there's anything wrong with SBL or aboot, but on this device it didn't. It should have been possible to force it into EDL mode if the mainboard was functional, though, and presumably the service centre tried that before reaching for the JTAG box.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
presumably.. or they are just lazy and don't spend more than a minute for free
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
btw just because a device model is listed, that doesn't necessary mean the box support flashing in edl mode. even if forcing edl via usb-pins is possible (xiaomi), still that requires factory loader (leaked from samsung internally). and JTAG over usb won't work. did service center even open the housing and short-circuit test point? if so, i am very interested where these test points located for this tablet
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
@fire_qc the simplest approach is to wait a few weeks until battery died. your tablet most likely stucks in aboot because of the downgrade protection.

My brother gave this tablet to me, after service center "tried everything" and laying around for months. He was beeing told unable to flash via Odin.

I just flashed latest available ROM and he was very surprised. Only problem is locked bootloader now
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
True, we don't know what the service centre did, whether they knew where the test pins are on this particular device, etc. Perhaps they didn't know / didn't bother to check thoroughly.

It would be good to know just what its status really was! And if the mainboard really was dead, how it got that way.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] DjLeleX:
Hey guys, can anyone compile an updated version for SM-T555 (gt510lte) please?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
3.3.1 is available at

Downloads for : Samsung Galaxy Tab A 9.7 | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

androidfilehost.com

There's no real world benefit past 3.3.1 for just updating/flashing your custom rom.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
And TWRP 3.3.1 works according to this thread as per @Schaagi

https://xdaforums.com/t/need-help-building-a-sm-t555-gt510lte-lineageos-rom.4255243/#post-84822837

and

https://xdaforums.com/t/need-help-b...te-lineageos-rom.4255243/page-2#post-84874887

and they were able to load 17.1 and 18.1 on T555. I have worked with Schaagi before on the T550.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] tiptel170:
Here the steps for the installation of the Lineage OS 18.1 on SM-T555 (gt510lte).

How to use ODIN or HEIMDALL, please use the Readme's or the other documentationes of these software for flashing this devices!

For damage, bricking or loosing datas I 'm not responsable, also please read it carafully step by step and make first an backup of this devices. How to uses backup or install, please use the searching function in this forum or other searching machines.

Translated from German to English

Enter Odin Mode:

1. press Home & Vol- & PWR simultaneously.

Install twrp2.8 first, then the new versions!

2. heimdall flash --RECOVERY recovery.img --no-reboot

2.1 Extract the files from lineage-18.1-20210424-UNOFFICIAL-gt510lte.zip:

- system.new.dat.br

- boot.img

- system.transfer.list

2.2 brotli -d system.new.dat.br system.new.dat

2.3 ./sdat2img.py system.transfer.list system.new.dat system.img

2.4 heimdall flash --BOOT boot.img --no-reboot

2.5 Put back into download mode

2.6 heimdall flash --SYSTEM system.img

3 Home & Vol+ & PWR => twrp

3.1 In TRWP only execute "wipe Data".

Lineageos 18.1 Download:

Lineage 18.1

Heimdall, broti and dat2img.py - Linuxapplications, please have a look in to your repo.

dat2img.py: dat2img

Brotli: Brotli

Bugs: In this moment unkown.

Let's have a look an cross the finges for installing
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
The easier way it to install TWRP 3.3.1, then install LineageOS 18.1 using TWRP 3.3.1. Its the "common" way to install LineageOS and likely to be more successful for all types of users.

@Schaagi already done the above at

https://xdaforums.com/t/need-help-b...te-lineageos-rom.4255243/page-2#post-84874887

Older versions of TWRP can't read the device name correctly or not coded to read the device name so it's returned back to the LineageOS updater script as a blank value.

Blank value != SM-T555 so updater-script will fail and not flash rom.

Older versions of TWRP can be made to bypass this safety feature by removing the assert statements in the updater-script.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Schaagi:
Because the above TWRP 3.3.1 has a too big size, it's not working on the T555. That's the reason why I have recompiled it. Now the size is about 14 MB and can be installed on the tablet now.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I did not know that since I don't own the T555. I wonder why it would be released if the image size is too big to fit on the partition?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] batouttahell24:
Is there any way to do this on a SM-T350 running 7.1.1? The only way I could get TWRP working is by flashing Marshmellow and then flashing TWRP because of the black screen bug if I just try flashing TWRP without flashing Marshmellow first.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] megamb11:
There is not. You have to downgrade to MM first.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] xqwert:
hey im trying to completely wipe my tablet (sm-t350, 7.1.1, build # T350XXU1CQJ5) because it just started acting like trash. ive been running speed tests and i consistently get under 50mbps with 600mbps wifi (all other device work great). anyways i think i got some virus or something idek lol. but ive factory reset with no improvement. i ended up flashing a stock rom thinking it was going to wipe clean the device from all data and the old OS but ive discovered that is not the case as my old apps were still there. So i looked into it and it seems i need to use TWRP to wipe the device? I dont even want any new android os. I'm totally fine with 7.1.1 because id rather it be stable and no negative affects on battey or apps or whatever. but im pretty confused what exactly i should be using to achieve this. im seeing things about downgrading to MM before going back to 7.1.1. Would that apply to me for twrp to work? if so, anyone willing to point me in the direction for the MM rom and the correct twrp download?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] aclosetweeb:
Will this support Samsung galaxy tab A SM-T355Y
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] carla_salvador:
hi guys, do we have twrp for sm-p355 running marshmallow? thanks. super noob here
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] psuryatej:
the first post has the link

twrp_3.0.2-1_sm-t355_mm_9816.tar | by ashyt16 for Galaxy Tab A 8.0

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

www.androidfilehost.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] psuryatej:
if you are loading the stock rom, you do not need twrp

You can use ODIN Tool to flash the stock ROM
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] carla_salvador:
thanks a lot!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] xqwert:
i've been looking on here just now and it's been a while and i'm confused.

would one of these ODIN be what i want? :

Patched Odin 3.13.1

For those looking for a modified, modded, or patched odin that is a newer build than all the fake and renamed prince comsy 3.12.3 versions floating around. I patch recent Odin versions to offer similar functionality to the princecomsy; in that...

xdaforums.com

is so, which one would you suggest for my device?

and lastly, can you link me a stock rom for either a 7.1.1 or even a 6.x? idc at this point which (just whatever is most trustworthy) i just want to see if it improves the device.

thanks for the reply though. i randomly used my throwaway email today and saw you responded recently
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] psuryatej:
Odin version doesn't matter, anyways I use 3.13.1

The stock version which I pick is from here

Latest Samsung GALAXY Tab A (SM-P555) - MM1 firmware

All Samsung firmwares for GALAXY Tab A in Singapore with model code SM-P555. We offer free and fast download options. Check them out now.

www.sammobile.com

You can use the tool from here for faster download

[Tool] Frija - Samsung firmware downloader/checker

* * * PLEASE UNDERSTAND WHAT YOU ARE INSTALLING TO YOUR DEVICES AT ALL TIMES AND ME AND THE DEVELOPER ARE NOT RESPONSIBLE FOR ANY SORT OF DAMAGE TO YOUR DEVICE * * * Hey Guys :) Frija is a new tool (successor of now depreciated tool SamFirm)...

xdaforums.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] xqwert:
ok last question (well two).

1. does the SM-P555 work the same for my SM-T350 ?

2. i looked up the sm-t350 on that sam site and they only have it for paid members. any other sites you can think of i should check out instead?

thanks again. wish i could give you more than a thumbs up!

edit: ok im in the process of installing it. i actually remember doing this last time (i remember odin after seeing the program) but ill see how it goes. otherwiise might just try a non-stock somone mentioned to me earlier on this thread

edit2: well. no luck. once again it didnt completely wipe the device. the apps are all still there. guess will have to try a cracked rom as last resort
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] psuryatej:
1. it will not work

2. That is why I have provided Frija to download
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] professor_jonny:
Is there a way to unlock the bootloader in 7.11 it does not show up in developer tools?

fastboot oem unlock in odin mode does not seem to work i cant attach to the device

The tablet is a sm-t355y I just want to install twrp to debloat it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] BigZ1:
I have a sm-t350 running Nougat. Would you please tell me which version of TWRP I should use? When I look at the list, I find the last one for sm-t350 is in the category of "Marshmallow only". In the category of "Nougat" there is only T355.

Also, can you tell me where I can find the stock rom (hopefully, Nougat) for the sm-t350? Thank you so much, in advance.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] BigZ1:
Any help at all will be much appreciated. I'm at my wits end here. Nothing I am doing is working.

I think I need to ask for help, and chill out until the cavalry arrives!

This all started with me trying to install TWRP recovery on my SM-T350 running Nougat. So far I have had zero success with flashing any TWRP files into recovery.

I then took a look at some error messages I am getting when I manually boot into recovery. Something that makes no sense; failed to open ... misc: No such file or directory. Internet searches indicate that this can be cured by reloading factory version of firmware. So I get a file Samfw.com_SM-T350_XAR_T350XXU1CQJ5_fac.zip . Now this is a zip file, so I can't push it to the device from Odin. I opened the zip file and extracted the AP file to Odin and hit start. It tried to load Boot.img to the device and failed.

I tried to use the stock recovery to apply this zip file as an update from the SDcard. It also fails because footer is wrong and signature verification fails. If Samfw had a .tar file for my tablet, I could use it with Odin, but I haven't found one yet.

So, I'm dead in the water. I can't seem to get TWRP installed, and I can't even flash to stock rom Nougat 7.1.1 to clear the errors from recovery . I think most of my problem is not being familiar with Samsung and how it flashes partitions. I'm reasonably familiar with doing this stuff on other brands of phones/tablets, but not Samsung.

Anyway, any suggestions and/or constructive criticisms would be greatly appreciated. Thanks in advance for your time and efforts in replying.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] alecxs:
you can't install TWRP on locked bootloader. not possible to downgrade bootloader, watch out current version to be flashed
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] BigZ1:
I'm not sure I understand your reply. Are you saying I should use twrp tar files from SM-T550 or SM-T555? Will they work on my SM-T350?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lpedia:
You can get stock firmware from https://www.sammobile.com/firmwares/ - enter the model number (SM-T350) and select your country, and it'll list the available packages. For the T350 there should be both Nougat and Marshmallow packages. If you haven't downloaded from sammobile before, you'll need to register an account.

The version of TWRP that you should use is 3.5.2_9. You won't find it on this thread, which has been inactive for quite some time. See the FAQ Q5 in @retiredtab's LOS 18.1 for the T350 thread https://xdaforums.com/t/unofficial-...or-galaxy-tab-a-sm-t350-june-11-2022.4305903/.

To proceed with installing TWRP, you might need the Marshmallow bootloader. This is because of a problem between TWRP and the Nougat bootloader for T350s with a BOE screen - the Nougat bootloader doesn't turn the screen backlight on, so TWRP's screen is blank. The Marshmallow bootloader does turn on the backlight.

To check whether your T350 has a BOE screen, install the DevCheck Hardware and System Info app from Google Play and look at the Hardware tab, Graphics section. If you have a BOE panel, the Panel item will contain "BOE". If you don't have a BOE panel, you can go with the Nougat bootloader.