yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A8 (2021)] spiderpool27:
It sounds like your device is stuck in a boot loop after attempting to flash vbmeta. This could be due to various reasons, such as incorrect flashing, incompatible files, or software corruption. Here are a few steps you can try to resolve the issue:

Boot into Recovery Mode: Try booting into recovery mode and see if you can access any recovery options to fix the issue. You can usually do this by holding down specific button combinations while powering on your device.

Reflash the Stock Firmware: If you have a

backup of the stock firmware or can find the correct firmware for your device online, try flashing it using fastboot or a similar tool.

Wipe Data/Factory Reset: In recovery mode, you may have the option to perform a factory reset or wipe data/cache. This could help resolve any software corruption causing the boot loop, but be aware that this will erase all data on your device.
[Samsung Galaxy Tab A8 (2021)] cengelhardt:
i will try... thank you very much!
[Samsung Galaxy Tab A8 (2021)] amitmartin:
Working
[Samsung Galaxy Tab A8 (2021)] ViolentMob:
This happens to me, I can't enter recovery mode. I tried to enter download mode, but it keeps booting to logo instead.
[Samsung Galaxy Tab A8 (2021)] lewmur:
You don't want to boot to recovery. You need to boot to download and flash latest stock ROM in order to recover from bootloop. To do this, plug in the cable to the PC and then hold both vol down and power buttons for about seven seconds. As soon as the screen blanks switch from power button to vol up while still holding vol down. It takes a while but it will boot back to download mode.
[Samsung Galaxy Tab A8 (2021)] ViolentMob:
My issue is the same as from this thread: https://xdaforums.com/t/sm-x200-root-failed.4402111/

I was unable to enter download-mode. Apparently, I need to wait until the battery dies before trying to enter download-mode.

Cause: flashing kitsune-patched vbmeta.img + boot.img

Issue: Initially, the device bootloop before going into some sort of dead boot. During the initial bootloop, I can't enter download-mode and recovery-mode. While it was dead boot, it won't respond to charging and button press. I detach the battery and reattach it again. I then connected it to usb. And it boots up, but the bootloop persist. I still can't enter download-mode and recovery-mode.

Solution: I wait until the battery dies and then tried to enter download-mode and it works!! While bootlooping, I connect the device to pc using usb and press the vol-up and vol-down button. After a few bootloop, it just enters into download mode!

I still hasn't flash the stock vbmeta and boot image though. Because I'm using linux and Thor doesn't seems to work reliably (It throws: 'Failed to bulk write: Resource temporarily unavailable (11)' despite having only been using Heimdall for flashing on this phone).
[Samsung Galaxy Tab A8 (2021)] lewmur:
The X200 doesn't need the vbmeta.img modified. In fact, that is what causes the bootloop. The method I gave for entering download mode DOES work. If it didn't work it is because you didn't get both vol up and down pressed before the tablet restarted. You have to be quick. And you have to keep holding them down for what seems like an excessive amount of time.
[Samsung Galaxy Tab A8 (2021)] ViolentMob:
I'm not the only one with this issue and not the first to use this solution: https://xdaforums.com/t/sm-x200-root-failed.4402111/

I posted a thread recently about how to fix it here: https://xdaforums.com/t/fixing-boot...m-a035f-from-flashing-patched-vbmeta.4675374/
[Samsung Galaxy Tab A8 (2021)] lewmur:
I don't understand your point. I'm just trying to give you the info on how to fix it.

1: Use the method I posted to get to download mode.

2: Flash the latest stock ROM with Odin or Heimdall. Boot to system, connect wifi, skip the rest of setup and re-enable Dev and Oem.

3: Use Magisk to patch the AP file.

4: Use an archive manager like 7-zip-Z to remove the vbmeta.img file from the patched AP file and re-tar it.

5: Use Odin or Heimdall to flash the tarred AP file along with the stock BL and CSC.

6: Boot to the system and use Magisk to finish the root process by choosing the "direct" option instead of file modification.
[Samsung Galaxy S10 5G Questions & Answers] erich_vogt:
Is this the right place to ask a question about the S10 5G? I'm trying to install lineage on it but I can't get heimdall to recognise it. I don't want to go into details if I'm in the wrong place. Could someone let me know please. Thanks.
[Samsung Galaxy S10 5G Questions & Answers] V0latyle:
We do have a section specifically for the S10 5g. Did you search before posting? It's rule #1.

As a courtesy I'll move your post.
[Samsung Galaxy S10 5G Questions & Answers] erich_vogt:
Thanks. Must have missed it. I'm a noob trying to install lineage on an S10 5G (Android 12) using Win10-64bit & the instructions for this model on the relevant lineageos.org web page. The bootloader is unlocked, Developer Options are enabled. USB Debugging is turned on. In download mode Zadig-2.8 could see it as "Gadget Serial" & replaced the driver with "WinUSB (v6.1.7600.16385)". I've got to the point where I'm supposed to do "heimdall print-pit" but it says the phone's disconnected & I cannot progress. In charging mode "adb devices" can see it & reports "R3CM6045AWJ device". "fastboot devices" cannot see the phone. Odin cannot "add" the phone in download mode. So it seems that I cannot connect to it with heimdall, Odin or fastboot. Is this a driver issue perhaps? Any assistance would be appreciated.
[Redmi Note 10] omaroch:
Well the title was kind of a clickbait sorry,

My redmi note 10 restarted and lost many important functions (wifi, audio, video, all sensors....), and after some research i found out that most likely a cpu reball will be enough (even a board specialist told me he will repair the cpu "most likely reballing but hes gatekeeping" but he asked for 60$ which is really expensive for such a work).

So I went ahead and opened the phone myself and heated the cpu, this is my first time and I do not have the necessary equipment, so I only heated the cpu and let it retake its placement (my thought process was that the some connection might be kinda loose so heating and letting it cool will help them get into place again) which was true because after booting it up it successfully worked but only for a total of 10min before restarting again and going back to the same issue.

At this point im very tired and I really cant pay for the reballing fee, Im thinking about a motherboard swap (almost same price) but im kinda worried about getting the same problem after a month or two.
[Redmi Note 10] khusika:
Hi @omaroch

It's better to replace the motherboard, reballing doesn't guarantee that the problem won't come back again. And i suggest to let your. Let the repairman assess the damage to your device first. Or it is better take it to the official Xiaomi service center.
[Redmi Note 10] omaroch:
This problem is kinda common in xiaomi phones, im afraid ill replace the motherboard and it will just occure again, but as you said its probably the best solution i can try
[Samsung Galaxy Tab A7 Lite] Derryktutt:
I would like to make notification sounds to only play through my headphones. It appears you can only do this with a Good Lock module, which is not available on this tablet. Is there an alternative way, such as a Magisk module, to do this?
[Touch Cruise ROM Development] jskyline:
I recently flashed my polaris to 3LIT3 WWE, Radio version 1.59.44.02. When I checked This network connects to the Internet then press ok, it will uncheck it by itself. That's the reason I'm not getting weather data. Is there anyone with similar problem please give me some advice.
[Touch Cruise ROM Development] jskyline:
Problem solved.
[Device Repair] lul_hannes:
Hi everyone,

I've recently gotten gifted a broken Nokia T20 tablet (ta-1392). The hardware is nice with a FHD screen so I figured it's worth having a go at repairing it (to maybe use it for Android Car or some hobby project). I'm a pretty huge nerd but I have close to zero experience with phone & tablet hardware. Programming, hobby electronics (Arduino, ESP32 etc.) and 3D printing is what I mostly do. I'm always interested to learn new things however and if I can fix this tablet perhaps fixing phones & tablets will become a new hobby of mine :)

Enough chit chat, this is the situation: the tablet pretty much shows no sign of life, no LEDs, no screen, no sounds and no vibrations. But when you connect it to a PC and hold the power & volume buttons the PC sees it either as "Other devices > Unknown device", or something similar where it also says "Bad device descriptor". Previous owner doesn't know when or how it broke, whether it stopped working at 0% battery or when it was fully charged. Didn't significantly drop it or get it wet according to her.

Now I don't expect anyone to instantly know the solution, but what I'm asking is this: where do I begin if I want to find out what the problem is? Like do I use a multimeter to test parts and if so, how and which parts? By the end of this week I should have the tools necessary to disassemble it. Any tips or tricks?

Thanks for reading, and any help is much appreciated.
[Device Repair] blackhawk:
Welcome to XDA

Replace the battery if there's any doubt. A dead cell can cause a completely unresponsive device. My N10+ just did that. Didn't even respond if attached to the charger, completely dead. It had 60% when it died. One battery latter, A-OK. Li's can fail in a variety of ways. Typically lifespan is 2-3 years.

Look for loose cable connectors. If it's the mobo or display repair probably isn't practical.
[Device Repair] lul_hannes:
Thanks for your response. I already looked around for a bit, but replacement parts for this device seem impossible to come by (at least in The Netherlands, where I'm based) so I'm hoping the battery, screen etc. themselves are intact.

Is there anything I can already rule out with the information I have? Like if the battery was completely dead, would the PC even register it when I hold the power and volume keys (as it does)? If the battery is dead or the connection is broken could you not just run it straight off the charger, skipping the battery alltogether? I know some devices work like that (recently ran into that with a wireless pin terminal for example) but I'm not sure about phones/tablets.
[Device Repair] blackhawk:
The charger unless it's a large one like on Dell laptops etc doesn't have enough current output to support boot. Same is true with phones.

Once the battery can't supply the needed current the device will many times be completely dead.

There could be another failure that caused the battery not to charge as well. The first step is to replace the battery as it's the most likely component to fail especially with a battery 2 years or older.
[Device Repair] mvikrant97:
Install Spreadtrum drivers on your PC and then restart it.

Connect your tablet as is to PC in switched off mode and see if it is shown as SPD U2S Diag in device manager instead of Unknown Device.
[Device Repair] lul_hannes:
Thanks for your response. As soon as I hold the power & volume buttons it does show up as SPRD U2S Diag (COM16). What does that tell you? When I just connect it and don't press power & volume buttons nothing happens.
[Device Repair] lul_hannes:
Aha, well, replacing the battery is probably not going to happen since I can't find a replacement part online. So I'm still rooting for the other possibilities. Thanks for your response.
[Device Repair] mvikrant97:
It means that the battery is absolutely fine and it is bricked.

Someone tried to unlock bootloader using unofficial method and it got bricked.

It has to be flashed using SPD Flash Tool with appropriate flash file having pac extension which won't be openely available on the internet.

You will need to make a firmware yourselves.

I can get the firmware for your tablet but the firmware has to be flashed in Fastboot mode only that too with authorised HMD flash tool.

Check to see if you are able to access fastboot mode. Also get me the TA-???? Hardware ID for your device.

View attachment 6066092

How to Enter Fastboot mode?
[Device Repair] lul_hannes:
Sounds like you really know what you're talking about, respect and thanks again for responding.

It's a TA-1392.

So to be clear, what is the first step now? Or the first few steps?
[Device Repair] blackhawk:
An easy fix and likely needed maintenance anyway. Bypassing this makes troubleshooting more difficult. Batteries can be found ie aftermarket same specs, dimensions and connector needed.
[Device Repair] mvikrant97:
The device won't show any signs of life on the screen because the primary bootloaders which are FDL1.bin and FDL2.bin are messed or else the system partition is completely messed up which triggers the emergency download mode on the tablet which shows up as SPRD U2S Diag mode in your computer.

The first thing is to check whether we can readback the current firmware from the device back using a supported tool so that we can backup the bluetooth, modem, wifi data and also your tabelt is a WiFi variant because the it's TA-1392.

I have license to use Unlock Tool which I can use to help you remotely if you allow me to do that. The software I use is a paid multi phone brand repair software which can interface with your device in Diag mode.

If we are successful in readnig back the tablet then we can make a firmware out of that files and flash back the device to atleast make it work.

Here is the demo video of the tool in action to how it does the readback on a Realme device from that Diag (SPRD U2S Diag) mode.
[Device Repair] lul_hannes:
Sounds great, I appreciate you offering to help me with that. How do you suggest we do this (remotely assisting me with the software)?
[Device Repair] mvikrant97:
I use Ultraviewer for remote access.

Share the ID password with me through private message to connect to your PC.
[Device Repair] lul_hannes:
I've sent you a PM
[Device Repair] mvikrant97:
Readback in progress......

Battery is absolutely fine as I said....

View attachment 6066121

View attachment 6066122

View attachment 6066123
[Device Repair] Shalun-avd:
Hi there! Can you manadge to recover this t20? I've got the same device with the same problem
[Device Repair] mvikrant97:
Not yet. Need to make firmware for the device in pac format.
[Device Repair] Shalun-avd:
I could solder out emmc and read it by Z3X. Will be this usefull for making pac?
[Device Repair] mvikrant97:
No. We already have the files required to make the firmware but don't have the XML file required to make the pac file.

You can refer to the video below for more information

I had the same issue on Nokia G21 before but its firmware had the XML file so it was fixed.
[Device Repair] hawka2007:
Good afternoon, I have firmware in pac format, but if your imei is corrupted, it will not restore it, the firmware is assembled and restores to 13 Android firmware version 331D, I can do more calibration, but I cannot change the imei to the factory one.
[Device Repair] mvikrant97:
Can you share the pac firmware here?
[Device Repair] hawka2007:
Папка из Облака Mail.ru Nokia T20

Скачивайте файлы из папки или сохраняйте к себе в Облако

cloud.mail.ru
[Device Repair] hawka2007:
Here is the cloud, if you can't download it here, write to post it to another place, please do not make it publicly available to anyone, and be sure to make backups of the miscdata, NV, prodNV sections
[Device Repair] mvikrant97:
Thank you so much. I will test it and write a detailed guide on this one.
[Device Repair] hawka2007:
It's good if you have the opportunity to write later how to change the imei, since it's ruined on my tablet. I have already tested on 4 devices, the imei remained fine on two, Full erase was corrupted on two, and it is being restored with an imei that is blocked.
[Device Repair] ErInfinity:
hello there, i am having Nokia T20 (TA-1397) . i am having trouble turning this device on . when i connect it to pc it only shows unknown USB device (Device descriptor request failed) i tried everywhere surfing how to flash it with miracle and OST LA however i found that i am messing with drivers because unable to solve the com ports. also not able to get the exact firmware/flash file online. Can you support me for flashing this device so that i can turn this up without anymore RND..
[Device Repair] mvikrant97:
Press and hold all the keys on the tablet while connected to the PC until unknown USB device (Device descriptor request failed) is disappeared.
[Device Repair] ErInfinity:
i am glad that you replied.. however i pressed all three buttons for 2-3 minutes nothing happened... sadly.. what to do next?

{Mod edit: Quotation fixed. Oswald Boelcke, Senior Moderator}
[Device Repair] mvikrant97:
how did this happened in the first place?

How did the tablet stopped working?
[Device Repair] ErInfinity:
This is its second time when it broke... For the first time it was like updating to official version then its battery gone to 0% and it never started... now it was on charging .. maybe it didnt took charging there where no electricity .. so it broke

any other way to bring this tab back to life?
[Device Repair] mvikrant97:
Flash it using spd tool but you need to fix its USB connection problem first for it to detect
[Device Repair] ErInfinity:
that is what i am looking for because i have installed SPD already ... however, i m installing many drivers and comport issue ... got nothing,,,, how can i do that?

i am unable to identify how to set the comport and accurate driver which will work on it...
[Device Repair] mvikrant97:
Install SPD drivers.
[Device Repair] ErInfinity:
i have already installed many drivers ...

i dont understand which one left..

How-to install SPD Driver R4.20.0201 (Easy Guide)

Step-by-step guidelines to download and install SPD Driver R4.20.0201 on Windows Computer to connect SPD/Unisoc Devices.

gsmusbdriver.com

maybe this one your talking about?

check this also
[Device Repair] mvikrant97:
Disable driver signature verification
[Device Repair] ErInfinity:
i did it twice but unknown USB device not going :((((

whenever i install any driver using legacy it gives code 10 error but says device is now installed is this normal?

can you help me taking REMOTE of my pc? check where i m messing?
[Device Repair] mvikrant97:
Yes I can do it.
[Device Repair] ErInfinity:
it will be really appriciating if you do this for me .. please tell me how can we connect?
[Device Repair] ErInfinity:
i am still waiting bro
[Device Repair] mvikrant97:
Sorry about it. We both live in different timezones, I hope you understand.

Are you able to connect the device in SPD U2S Diag mode?
[Device Repair] ErInfinity:
i understand .. sorry .... no i m not able to .. it shows same error unknown usb device..
[Device Repair] mvikrant97:
Do you have Windows 11 or 10?
[Device Repair] ErInfinity:
its Windows 11 Pro
[Device Repair] mvikrant97:
Does it have USB 2.0 Port? I mean your PC?
[Device Repair] ErInfinity:
yes .. it contains both the ports 2.0 and 3.0

i tried every driver and usb ports i dont understand from where i m missing because this is my first time...

can you take remote to check where m i doing wrong?
[Device Repair] mvikrant97:
Download free remote desktop software UltraViewer

Download UltraViewer free to remote support your client or partner from anywhere around the world.

www.ultraviewer.net

share the ID password with me in private

CLICK HERE TO MESSAGE ME
[Device Repair] ErInfinity:
hello there.. how can i install fastboot2.0 so that my pc can detect the phone?

after installing it .. android sooner single ADB interface came ... but miracle not taking it .. still says waiting for USB port... and says maybe driver not installed
[Device Repair] unlockfrp5251:
link expired can you reupload it thanks
[Device Repair] DrKamBoosha:
Yes please, & if anyone have ".pac" roms for this device then please upload
[Device Repair] unlockfrp5251:
do you have the same tablet and do it have fastboot?
[Device Repair] DrKamBoosha:
yes it have fast boot .. you shut it down the power up while holding power & volume up keys together till you see fast boot mode
[OnePlus 11R (Ace 2)] restart124545:
Hello. I am facing the following problem. My Oneplus Ace 2 on ColorOS, android 13.1 version 184 has recently received an OTA update to ColorOS android 14 version 301(CN).

When I try to install this update as usual, the phone after rebooting gets to the fastboot mode, does not want to update and after a few reboots gets back to Android 13.1 version 184 with the note "update failed". All previous OTA updates on my phone worked smoothly... Does anyone know what could be the problem and how I can update to ColorOS version 14 301 without unlocking the bootloader or/and wiping phones data?
[OnePlus 11R (Ace 2)] spiderpool27:
Try clearing the cache partition on your device. This can sometimes resolve issues with the update process. To do this, boot your phone into recovery mode and select the option to clear the cache partition.​

It doesn't effect loss of any data
[OnePlus 11R (Ace 2)] restart124545:
Sorry, but I don't see the "clear cache partition" in the recovering mode. There are only format data, restart and turn off options...
[OnePlus 11R (Ace 2)] jopac84:
Happened me too today, it is because it tries to do official update, and you cannot do that if you changed from oxygen to color OS. I restarted the phone to bootloader and recovery few times it booted up then after restarting device.
[OnePlus 11R (Ace 2)] jopac84:
Can anyone help with updating the firmware, i can download update in that oneplus update app, but i cannot update system anymore
[OnePlus 11R (Ace 2)] belaidabed:
dont worry i can build a rom of android 14 for direct flash without any problem ...and its will fix all problem .. its Vip service only.
[Blade General] mr.lfrl990:
CVE-2022-38694​

An attacker with physical access to the device can overwrite a function pointer somewhere in the BootROM data section or a return address stored on the stack and execute their own code with BootROM privileges. More info here.

This allows us to unlock the bootloader of our ZTE Blade, but there are also affected devices from other brands, such as Alldocube, Blackview, Dooge, Infinix, Itel, Nokia, Tecno, Realme.

More info here.

Usage​

Windows:​

1) Download and install Spreadtrum Drivers, then reboot your PC.

2) Download the package for your model:

ZTE Blade A51

ZTE Blade A52

ZTE Blade A5 2019

ZTE Blade A7 2019

Then, unzip it.

3) Put your phone in Download mode (UP+DOWN+POWER) and connect it to your PC.

4) Execute the .bat file in the unzipped folder.

Ubuntu:​

sudo apt-get install build-essential libusb-1.0-0-dev git
git clone --recursive https://github.com/TomKing062/CVE-2022-38694_unlock_bootloader.git
cd CVE-2022-38694_unlock_bootloader
gcc chsize.c -o chsize
cd spreadtrum_flash
make
[Blade General] djang085:
does it also work for Nokia G22?
[Blade General] Azaze666:
I have to retreat my words, seems like ZTE on new models is using a public key, I rooted A52, but A5 2019 no avail (but I had my previous root so patience), my opinion is that on old models zte used a private key then switched to the key of this post:https://github.com/TomKing062/vendo...ain/sign_image/config-unisoc/rsa4096_boot.pem which works for A52
[Samsung Galaxy Tab A series Guides, News, & Discus] Woolium:
Is Their A way to downgrade to android 8? This Tablet Is SO bogged down with android 10 so is there a good way to downgrade?
[Samsung Galaxy Tab A series Guides, News, & Discus] parrots_:
Doubt it. The bootloader version / binary for Android 10 is 3, while the Android 8 binary is 1. Considering it seems to be Verizon model too, I don't think you could root it to overclock it or anything, since Verizon blocks the ability to unlock the bootloader.
[Samsung Galaxy Tab A series Guides, News, & Discus] Woolium:
I've seen a few videos, and it might be possible to downgrade the binary by switching up the file?