yashsingh1/xdaforums huggingface dataset:
[Redmi Note 9 Questions & Answers] Killogy:
Hi, I have a Redmi Note 9 shipped with MIUI version MIUI Global 12.0.3 Stable (QJOEUXM) I already unlocked bootloader because I want to root it and already backed important partitions with SP_Flash_Tool. Phone wan´t to update to 12.0.9.0 version but I want to update manually to 12.0.4.

Following this guide https://www.xda-developers.com/how-...i-android-update-xiaomi-mi-redmi-smartphones/ I already created the downloaded_rom folder and placed the miui-blockota-merlin_eea_global-V12.0.3.0.QJOEUXM-V12.0.4.0.QJOEUXM-7f62044532-10.0.zip file but when I choose "Choose update package" and select the zip it asks to "connect to a Wi-Fi network to download this update", I do, then select again the zip file and I get the error Can´t verify update Sorry, flash to this stable version is not allowed. Same issue with miui_MERLINEEAGlobal_V12.0.4.0.QJOEUXM_71e6083767_10.0.zip.

If I use the latest update miui_MERLINEEAGlobal_V12.0.9.0.QJOEUXM_5a7954d9cf_10.0.zip then allowed to update.

Then I try recovery method, rename the zip file to update.zip and placed to the base directory of the phone’s internal storage. I Rebooted the phone into recovery mode but there is no any option to install update zip, only Reboot - Wipe data and Connect with MiAssistant.

I should to do a factory reset to "unblock" this update hang 12.0.9.0 blocking me to update to 12.0.4.0 or there is some clear updater cache and data option (I can´t find it) ?

Why I can´t update manually, is because MIUI updater is detecting and waiting to updating latest update 12.0.9.0 and then is blocking older update to installing manually?

Why there is no option in recovery menu to install update.zip file?

How I can update to 12.0.4.0 from MIUI updater and zip file?

I should to use MiFlash and flash merlin_eea_global_images_V12.0.4.0.QJOEUXM_20201121.0000.00_10.0_eea_66369cf4be.tgz as last alternative ?.

Another doubt I have is if I update to 12.0.9.0 can I root flashing patched Magisk boot.img (12.0.9.0) from fastboot ? everything about rooting is allowed with 12.0.5.0 or Higher? I ask this because I do not understand correctly when I read "if you are on 12.0.5.0 or higher you need to use SP_Flash_Tool in EDL mode bypassing authentication for flashing" is only about flashing custom Rom?.

I only want to use Official Xiaomi ROM and rooting to restore app data from my previous rooted smartphone using Titanium Backup. Also I can´t to use Netflix because with unlocked bootloader Netflix do not want to update and I can´t use it and I don´t know if Magisk can fix this.

Sorry for my poor english skills and thanks for reading and for all the help you all can provide.
[Redmi Note 9 Questions & Answers] VergeDX:
GitHub - ianchb/MIUI-Flash-Freely: By changing the "support_ota_validate" value in the device_features file of any available Xiaomi or Redmi phone running MIUI 12/12.5/13 to "false", it is possible to freely select the .zip package in the System Upda

By changing the "support_ota_validate" value in the device_features file of any available Xiaomi or Redmi phone running MIUI 12/12.5/13 to "false", it is possible to freely sele...

github.com
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
I'm not responsible for any damage to your device of any sort.

By flashing this you take responsibility of anything that happens.

Process at your own risk!

Special thanks to Exynos5420 team and LineageOS for all the sources.

Use SM-T900 build at your own risk. I can't guarantee you it will work, because I have no device to test it on.

Work

Almost everything

It has pretty much the same functionality as Lineage 14.1

Known Issues

Built in mic not working

USB problems

You tell me...

Installation:

1. Flash latest official Samsung Firmware with ODIN

2. Flash latest TWRP Recovery: SM-T520 - SM-T900

3. Backup all partitions

4. Wipe Cache and Data

5. Install ROM.ZIP

6. Install latest GApps (ARM/Android10) https://opengapps.org/

7. Reboot and Enjoy

8. Optional: Install Magisk

For SM-T520 TWRP recoveries 3.1.1.0 and older will not flash this rom ending up with error 7: incompatible device.

Make sure to flash TWRP mentioned above.

Download:

SM-T520

SM-T900

I ll probably create builds with updated security and device code patches occasionally.

Enjoy fresh new Android!

Sources:

https://github.com/LineageOS (LineageOS 17.1)

https://github.com/exynos5420/ (Kernel, Device, Vendor)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Larision:
Damn!! Just installed and working.

Really good work! Thanks!!!!

i found a bit problem, starting android it loops between voice assistant and set lock for tablet. i needed connect earphones with microphone to finish voice assistant configuration and then it continued.

Thanks for rom!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] manix01:
@TechDriver can You build a LineageOS 17.1 ROM for SM-T900 who is used the same Exynos5420 CPU?

If is necessary I can be a beta tester.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
You got it there try it out!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] pjotrski1000:
Did you install on the t520 or the t900? Did you really go back to the Samsung official build first? (I'm on t900 lineage 14.1)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
You don't need to go stock, just backup your data using TWRP and follow installation steps above. I am little unsure about build for T900 because I do not own this device, so I wait for someone who can report me if it works or not.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
@TechDriver Clean flashed 17.1 over 14.1 without flashing stock on T900 using twrp-3.5.1_9-0 and it flashed great. I plugged in a headset but my Hey Google was already recorded and didn't give me any trouble. I don't know what would have happened if I hadn't plugged in the headset. Play Store does not recognize my already purchased apps. This usually means something is not right and I wonder if not flashing stock first is related to this? Can be very smooth but can be a little glitchy as well. Still experimenting and trying things. Bluetooth Keyboard and Mouse work great. Thank you for this.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
It has probably something to do with missing play protect certification. I will try to sign device for certification but need someone with T900 who will cooperate with me. For now easiest way to avoid problem is going to browser version of play store and installing paid app to specific device from there. It should work fine. Also thanks for testing and reporting that T900 build works.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] hamudistan:
Just for understanding, these are still 32 bit builds, vor did you switch to arm_64?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
@TechDriver SELinux is not enforcing. That may be why Google Play does not recognized my purchased apps. Installing purchased apps trick from Google Play on the web worked as expected. Booting tablet, it does not accept passcode on the first try, but works on second try. This is repeatable. I will be happy to be your T900 tester if you make some test builds.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
Exynos5420 is 32bit SoC. It doesn't support arm64
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
@TechDriver The pass code works the first time if you are not impatient and click the accept arrow before the last number changes to a dot. There is a delay and the passcode entry is laggy and you have to be patient for a few seconds. twrp-3.5.1_9-0 is able to back up and restore 17.1 with no problem.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
@TechDriver The first login with PIN after booting will fail. The second and future screen saver logins will work with the caveat that you are patient until the last number turns into a dot.

Pixel launcher does not work correctly with mouse clicks and has a focus graphics glitch. It works right as long as you don't click the mouse. If you click with the mouse to open a group of icons in a folder it leaves a residual grey box behind. You can see this same grey box where the PIN numbers appear on the screen saver as well. I changed to Nova Launcher and the problem improved with the grey box occurring if I open the icon folder and actually open an app but then disappearing on moving into a different folder. This is all with the exception of the PIN screen saver which causes the same grey box on both launchers. Something is not quite right with the graphics using mouse.

I mostly use this tablet with keyboard and mouse and Nova is more acceptable now. I prefer Nova Launcher anyway as it is much better at using the whole screen.

The camera is extremely basic. Open Camera seems to be an improvement. Any Google Camera port available that might work?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
Just to make things clear, I am not developer of code and not skilled enough to make changes in it. For this job, there is team exynos5420 and other cool contributors to make device sources. I use their device sources from exynos5420 and LineageOS github to build together final product... Rom.zip you install on device. I can't fix bugs, i only can wait until some contributor fixes it and I will build rom with fixes and updated security patches included.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
@TechDriver Got it. Will the devs be watching this thread for feedback?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] TechDriver:
I am unsure about that, most of original devs for n2awifi and v2awifi stopped developing code for this devices. Keep an eye on exynos542X github for new commits.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] manix01:
First of all I want to thank you for the this ROM.

I tried this ROM with the latest TWRP version for two days and I want to inform that it is working good with some small non-conformities:

I had some random reboots and the system crashed and freezing

After rebooting there is a long time after entering the unlock pattern, sometimes it is necessary to enter the pattern several times.

I have installed ROM, gapps nano rebooted and after that install Magisk 22.1

my model is SM-T900
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] stanl56:
@TechDriver ,Great work on this build! Never thought I would see this accomplished. Many thanks and keep up the good work. This is fully usable with Nova beta 7.0.27.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] Cebiidae90:
Works perfectly on my T900, many thanks! Keep up the good work!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] kb8no:
Can you provide a link for this latest Nova beta? APK mirror seems booked.

Nova 7.0.27 Works smoother and scrolling and moving icons is better. PIN screen on first login is same problem and will not work on the first try. Mouse clicks and mouse related screen painting remains an issue. If you don't use a mouse you may not notice any problems other than first login. Come to think about it, 7.1 had issues with the mouse most noticeable when I used Collabora and I had attributed it to the app.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bmwdroid:
@conan9010 still on TWRP 3.0.2 I guess?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] conan9010:
Yes, twrp 3.0.2.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bmwdroid:
afaik to old for 17.1
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] conan9010:
if I use twrp 3.1.1 the tablet turns off and on again, so it's not stable, 3.2.3 doesn't work for me, the only one that doesn't give me problems is 3.0.2
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bmwdroid:
If "Error 7" is no problem, fine ;)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] conan9010:
so how can i fix it? I did everything you suggested but the result is always negative
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bmwdroid:
@conan9010 to me it seems something is wrong with your device.

If it was mine I'd start from scratch flashing latest stock first.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] conan9010:
last time, 3 days ago, with twrp I did the total reset, the tablet was empty, without an operating system, I started from there but nothing, it does not install 17.1
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] dd9ps:
Flash with latest TWRP Recovery: SM-T520 works fine, but secureGoPlus recognizes a jailbreak, which I can't find :-(
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] vrt0r:
I can confirm this, got exactly the same trying to flash with odin 3.10.6, the linked TWRP Recovery is also not installable with 3.10.6.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] dd9ps:
You have to flash with latest TWRP Recovery. Look at the thread SM-T520 how to install TWRP 3.2.3
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] defmy:
I have problems with the camera. I got a "Can't connect camera" error. I tried clearing the caches, changing apps but nothing solved this problem. Do you also have a similar problem?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] defmy:
Full reset solved my camera problem. It probably appeared after an update.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] SiebenSieben:
Thank you so much for your hard work!

I'm thinking about upgrading my T520 from LOS 14.1 (+ OpenGApps Pico + twrp-3.2.1-0-n2awifi) to your ROM since some apps require Android 8+ and my headphone only connects with a crappy codec and not with aptX.

After reading this thread, the following issues occur to some people

1. build in mic

2. USB port

3. google speech assistant

4. enter pin twice

5. buyed apps from google play are not listed

6. netflix app not shown in play store

7. large wall paper take a second to load when returning to home screen

8. bluetooth mouse and keyboard issues

9. camera app only works after full reset

10. wired mtp file transfer

11. battery drains faster than it charges

12. background tasks should be limited because of just 2GB ram

13. GApps slow the tablet down

14. Battery issue with Gapps

Since many reported problems are related to the first post (ROM from 5/2021), can you or somebody else comment which issues still exist?

Another question: What is the best way to do the upgrade from LOS 14.1. My plan is as follows:

0. backup EFS/Modem, System+boot and Data in 3 steps

- makes it easier to determine incorrect files

1. Flash TWRP 3.2.3.0

2. Wipe system, cache, data, dalvik

3. format data

4. reboot

5. flash your ROM

6. reboot

7. flash BitGApps and Magisk.zip

- Better than OpenGApps?

Thank you in advance!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] r.flatty123:
Thanks to the great master for this great work!

With my SM-T900, the 17.1..v2awifi runs clean and fast.

Question:

Will there be another security update for the SM-T900?

installed with Odin: -twrp-3.7.0_9-0-v2awifi...

then

-Format

-Wipe Cache/Data/system

chosen

zip

-lineage-17.1-20210510-UNOFFICIAL-v2awifi

-open_gapps-arm-10.0-nano

be happy:)
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] vanMacG:
Dirty flashed over your 20220203 and works like a charm. Thank you very much!

It would be nice if you can provide an updated version from time to time, much appreciated.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] regepower:
Hello,

first of all many thanks to @TechDriver and @bacardischmal for this excellent ROM. It runs great and really turns this old device into a daily driver!

Since I had some problems with the installation and see in the threads that I am not the only one, here is a more detailed explanation of the individual steps. Maybe I can help a bit, as I am really a beginner in this field. For example, I have the same problem as @conan9010.

The installation is for the SM-T520 picassowifi.

Prerequisites:

1. download Odin, i took this as i just needed it for a Galaxy S3. i also tried Heimdall but had absolutely no success!

2. download the last official twrp from here.

3 download TAR_MD5_PACKAGER from here.

4 download the unofficial TWRP 3.2.3-0 - Version 2 from here.

5 download Lineage by @bacardischmal from here.

6 download Gapps from here, I chose the ARM 10.0 nano.

7 download magisk from here.

Installation:

1. copy files 4 - 7 to the internal memory of the device. Rename Magisk.apk to Magisk.zip.

2 Convert the official twrp with TAR_MD5_PACKAGER into the format for Odin. To do this, I converted the recovery image into a .tar archive under Linux. This should also work with 7zip, but I had read that there were sometimes problems. then simply start TAR.MD5_PACKAGER.bat and follow the instructions.

3. put the device into download mode, start Odin and flash the official twrp recovery. for help with odin, just look here.

4. boot the device into recovery. I use "adb reboot recovery" from windows so that I don't always break my fingers with the key combinations :)

4. in twrp go to install-> flash image (right side) and select the unofficial twrp 3.2.3 from the device memory. Flash as recovery and restart the device. Flashing this Twrp version with odin does not work!

Reboot the device into recovery. The boot process takes a while, so keep calm :)

6. perform factory reset in twrp (wipe data + cache + dalvik) This also takes time I think because of the creation of the ext4 file system for cache.

7. select lineage, gapps and magisk (in this order) and flash. I flashed lineage first, then factory reset again and then gapps and magisk,

8. Perform factory reset again

9. reboot and enjoy :)

After the installation, however, the device was still not really usable because it was very slow.

I recommend using programmes like Swapper (root) to create a swap file. this speeds up the device enormously! That's why I also installed magisk.

With Swapper I created a 1024Mb swap file and left swappiness at 30% It works perfectly!

So I hope it helps one or the other.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] mwahahaa:
Great tip. I thought I was the only one wholly unimpressed with the performance of this rom "as is" (the 2GB RAM and weak Exynos processor are major limitations). I previously tried limiting background activities but that didn't make any difference and I was ready to chuck my T-520 in the garbage. However, using a swap file like you suggested has me partying like it's 2014! Now if I can only find a way to achieve widevine L1 status so I can watch Netflix in HD...
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
I recently built /e/OS 1.8.1 Android Q for v2awifi. Security update is of January 2023. See

https://xdaforums.com/t/rom-samsung-sm-t900-v2awifi-unofficial-e-os-v1-8-q-android-10-0-q.4561637/

I'm currently on the way to repair the mic/recording. The root cause is: /system/vendor/etc/mixer_paths_0.xml is derived from github.com/exynos5420/android_device_samsung_v2a-common, and this is incomplete.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] harrybarracuda:
Could I please ask for some help installing LineageOS 17.1 on an SM-T900?

Having read the thread I reverted my device to Stock Rom, Rooted and installed TWRP 3.0.2-0.

I had no trouble getting to LineageOS 14

However, when I try and install 17 through TWRP 3.0.2.0 it errors saying a file is missing from META-INF.

If I try and install it through TWRP 3.7.0.9 it says "Invalid Zip File Format"

Can someone tell me what I'm doing wrong or if there is another way to install 17.1 on the SM-T900?

TIA
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bmwdroid:
I have the impression that the file is corrupted when 3.7.0 tells you that.

tested older TWRPs but younger than 3.0.2 if there're any?

Did you test checksum?

Tried a second download of that file?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] harrybarracuda:
Got it from the OP.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
I had no problem installing LOS 17.1, the link from the beginning of this thread, on SM-T900, using TWRP 3.7.0.

Probably your download is corrupted.

You could also install my current build of /e/OS 1.8.1 q, based on LOS 17.1, see

Post in thread '[ROM][Samsung][SM-T900][v2awifi][UNOFFICIAL][/e/OS v1.8-q][Android 10.0 Q]' https://xdaforums.com/t/rom-samsung...s-v1-8-q-android-10-0-q.4561637/post-88280091
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] bacardischmal:
Hello,

i did a new Build for the SM-T520 with the last security patch 5th Feb 2023

FYI: I am not sure if I will continue to provide updates as I will be selling my tablet.

https://www.file-upload.net/download-15113987/lineage-17.1-20230316-UNOFFICIAL-n2awifi.zip.html

https://www.file-upload.net/downloa...1-20230316-UNOFFICIAL-n2awifi.zip.md5sum.html

Test on your own risk, Do a Backup before!!!!
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
My current build of /e/OS 1.9-q for v2awifi is also linked in that thread.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] ahmed786:
has anyone found a good way to increase ram on the t520. ive tried both swapper and zram and they both havent helped. the tablet is lagging alot. ive debloated as much as i can.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] jumatemi:
It works perfectly on the SM-T900 tablet. The only slightly annoying problem is that it doesn't allow you to configure the screen colors and especially the reading mode at night.

Thank you for your effort and encourage you to add some more security patch in the future.

Thank you so much.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] mwahahaa:
There's no magic solution. This is an old tablet with a weak processor and woefully inadequate 2 GB of RAM. Swapper can help a bit but will not adequately offset the limitations of the hardware.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] regepower:
Is dirty flashing over existing system possible?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] regepower:
Dirty flash possible?
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] 1.Ritter:
Resolved
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] vantt1:
That website is complete and utter trash, I disabled my ad blocker and clicked the obviously fake "Download" button and still couldn't get to the files.
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
See my post here - I'm using a Magisk module to activate zswap and swap, with success:

[ROM][Samsung][SM-T900][v2awifi][UNOFFICIAL][/e/OS v1.8-q][Android 10.0 Q]

Yesterday I managed to build /e/OS v1.8-q for Samsung 12.2" tablet SM-T900 v2awifi (built 2014). Sources: Exynos5420 team and LineageOS and /e/ Foundation. https://gitlab.e.foundation/e/os (/e/OS v1.8-q) https://github.com/LineageOS (LineageOS...

xdaforums.com
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
See my post here - I'll try to build /e/OS-1.17q for n2awifi since my v2awifi build is now running.

[ROM][Samsung][SM-T900][v2awifi][UNOFFICIAL][/e/OS v1.8-q][Android 10.0 Q]

Yesterday I managed to build /e/OS v1.8-q for Samsung 12.2" tablet SM-T900 v2awifi (built 2014). Sources: Exynos5420 team and LineageOS and /e/ Foundation. https://gitlab.e.foundation/e/os (/e/OS v1.8-q) https://github.com/LineageOS (LineageOS...

xdaforums.com
[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
Here's my current build of /e/OS-1.17-q for n2awifi (SM-T520). This OS is based on LineageOS 17.1 and Android AOSP 10.

I cannot test it since I've only got a v2awifi (SM-T900). But it is the identical code base.

Use at your own risk!

https://www.file-upload.net/download-15249551/e-1.17-q-20240104-UNOFFICIAL-n2awifi.zip.html

Here's the boot.img that you can patch with the Magisk app to root the tablet.

e-1.17-q-20240104-UNOFFICIAL-n2awifi.boot.img

(I wanted to upload it to AndroidFileHost.com, but this site is very unreliable and uploads are currently not working.)