[Redmi K20 / Xiaomi Mi 9T Guides, News, & Discussio] Nilsb7:
Off-topic well formatted installation guide: https://xiaomi.eu/community/threads...i-11-on-mi9t-9-9-26-9-10-17-9-10-24-v2.52539/

Decided to create this thread to try and get some clarity about what versions work with what ROM etc.

See the Google Drive folder below for all download links.

Official TWRP

Unofficial TWRP

Legend

Official TWRP

https://dl.twrp.me/davinci/

Unofficial TWRP sources

LR-Team - https://pan.baidu.com/s/1pThxSY7y6mJWy0MMyB-qCw (Password is: q62n)

4DPA "davinci-fix" - https://4pda.ru/forum/index.php?showtopic=955101

Greek "blue Ss" - https://xiaomi-miui.gr/community/index.php/Thread/25256-TWRP-3-3-X-X-για-συσκευές-XIAOMI/

Google Drive folder of all versions: https://drive.google.com/open?id=1RHz4uQxc10fyyGBVJUZLeAXTasdtvhwDt

I'll try to keep the OP and Google Drive archive updated with your replies and/or new information.

Installation instructions for the Russian 4PDA version by Skiamakhia

Detailed (possibly outdated) information below:

Recent post updates:

2019-11-11

This changelog is too much work. Using second excel sheet instead.

2019-11-05

Added new LR-team release

Changed excel sheet format, added "partially working" category, added new sheet with sources.

2019-10-30

Added new Stock MIUI version 11.0.2.0

2019-10-24

Added new TWRP release LR-Team 2019-10-22, thanks to KudoConan

2019-10-20

Added new release: Xiaomi.eu weekly dev 9.10.17

Marked LR Team 2019-09-16 as incompatible with Xiaomi.eu weekly dev 9.10.17. Thanks to Pupet_Master

2019-10-11

Replaced latest Greek version in table with twrp_davinci_3.3.1_09-10-19_red because I don't have any info on whether that version worked or not

Added new Greek version twrp_davinci_3.3.1_09-10-19_red to Google Drive folder & the excel table

2019-10-09

Confirmed compatibility of Xiaomi.eu weekly dev build 9.9.26 with LR-Team 2019-09-16 and 4PDA 3.3.1-4.

Added latest Xiaomi.eu stable build: xiaomi.eu_multi_HMK20MI9T_V11.0.3.0.PFJCNXM_v11-9. This is NOT Android 10!

2019-10-02

Added xiaomi.eu 9.9.26 weekly dev build

Added stock Xiaomi 10.3.15

Added new Greek TWRP version

2019-09-30

Added information about the new release: 4PDA brigaduv's 3.3.1-3 and 3.3.1-4

2019-09-28

Added information about the new release: LR-Team 0916

2019-09-04

Added confirmation of the latest Greek version working with the latest 10.3.15 xiaomi.eu stable build.

Added confirmation of the latest 4PDA version working with the latest 10.3.15 xiaomi.eu stable build.

2019-09-02

Added xiaomi.eu 10.3.15 to the Excel table, compatibility unknown.

Added confirmation of Stock MIUI version 10.3.11 working with 4PDA TWRP. Thanks to Eng.Raman and others.

2019-08-16 Crude & quick update

Added Skiamakhia's information

To save some time and since it looks like we've found some stable versions I won't be linking to every source anymore. Unless it's outside of this thread, probably. I will keep updating the Excel sheet screenshot.

Prettified - only using 9.X version number for dev builds now

Rearranged and improved excel sheet based on fmcheeta's suggestions

Added confirmation for 10.3.14 stable

2019-08-13

Aded Schnedi's information about the stock ROM compatibility

Added excel table overview because this **** is getting out of hand

Added kezzuki's information

2019-08-12

Added fmcheetah's information

Added new Greek version "twrp_davinci_3.3.1_12-08-19_blue_Ss_new.img" to Google Drive archive

Added Immortal68's information

2019-08-10

Added new Greek version, added Russian version install instructions

More detailed (possibly outdated) information below:

These are sorted from most likely to work, to least likely to work.

Version: 3.3.1 - LR Team / Chinese - 2019-06-07

Source: https://pan.baidu.com/s/1pThxSY7y6mJWy0MMyB-qCw (Password is: q62n)

Status: Works up until Xiaomi.eu 10.3.12. Does not work with Xiaomi.eu 10.3.14 and up.

Confirmed BROKEN on Xiaomi.eu 10.3.14, see here

Confirmed working on Xiaomi.eu 10.3.12 stable by me, but I'm not sure about the latest 10.3.15 one!

Confirmed working on the stock ROM 10.3.12 by Master_T.

Note: (Sometimes?) needs extra misc.bin file to be flashed which causes the Mi 9T to think it's a K20. Chinese language is selected by default but you can change it to English. Instructions: https://xiaomi.eu/community/threads/twrp-not-flashing-booting-in-9t-eu.51183/#post-493030

Version: 3.3.1.-2 - 4PDA / Russian - Don't know when this was released/updated. - Partially working

Source: https://4pda.ru/forum/index.php?showtopic=955101

Status: Can't restore data! See here

Shows false "no OS installed" error messages according to Immortal68

"Work with last EU.DEV 9.7.25 and also Stable ROM." According to https://xdaforums.com/mi-9t/development/unoffocial-3-1-1-2-fixed-4pda-t3952672

Note: Use following instructions or run included bat file if coming from Windows

fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img

fastboot erase recovery

fastboot flash recovery twrp.img

Version: 3.3.1 - Xiaomi-Miui.gr / Greek - 2019-08-12 - Partially working

Source: https://xiaomi-miui.gr/community/index.php/Thread/25256-TWRP-3-3-X-X-για-συσκευές-XIAOMI/

Status: Data backups don't work! See here