I still can’t get wifi/bluetooth, even after using the Lenovo Software Fix tool to reset to android (where wifi/bluetooth work well on it) and started the installation again from the beginning. I still have the last image of UT flashed and followed the instructions well. (+ and the command fastboot format:ext4 userdata works correctly now, no need to format through the tablet) Maybe I should try to reinstall with ubports (hoping not to back again into the bootloop problem) or use another image ? (Maybe for some unknown reason, this image is problematic for me ?)

Well, to be honest, I downloaded it here because I followed the instructions on this web page. But normally that I downloaded it here or on the git official page, this should be the same since its two android files have the same name (TB-X306X_S230973_240402_BMP). Well, I will still redo the whole installation with 100% the instructions of the official git, I think.

I remade an installation by taking the latest version of UT (here) and this may be the mistake I made last time but now, I have a new problem, I do not have wifi/bluetooth on my tablet.
I did find this post but I do not understand why it does not work anymore because before the reinstallation, the wifi/ bluetooth worked well. So I have to go back to android to reinstall UT ?

It seems to me that yes. + used fastbootd to flash UT too (also used the tip indicated to format userdata).

Automatic updates also do not work (the download is ok but the installation does not work) and in addition ubports-installer does not recognize my tablet as having UT but only hallium. Maybe by going to the installer it would fix the problem? But I may lose my data, right?

Hello, I can not install the latest updates for my tablet I tried a manual update sudo apt-get update & sudo apt-get upgrade but I have a message from ereur telling me that the file Files/var/cache/apt/archives/partial does not exist.
I try to create it with sudo mkdir -p/var/cache/apt/archives/partial
but again I have a "read only file system" error message and again I tried several commas (sudo mount -o remount,rw/ & sudo fsck -Af -M) but still without success.
So I’m not sure what to do, maybe using ubports-installer would solve the situation? But it does not risk to uninstall/reinstall everything? For your information, I did the manual installation https://gist.github.com/thekosmix/1a7fc2308e9c9ea78bb4ad24bc0cda1a because after using ubports-installer I ran into a problem https://forums.ubports.com/topic/10835/tb-x306x-bootloop-when-install-attempts-from-installer/3
In any case, I find that UT is rather not bad I think. (yes, it’s my way of congratulating you).

@MrT10001 said in TB-X306X bootloop when install attempts from installer:

As per above, the installer gets to reboot to fastbootd and the tablet goes into a bootloop (TB-X306X 4Gb/64Gb). I can only power the tablet off after this or boot to EDL mode to recover back to Android.

Is this an installer files issue?

Any other ideas before I attempt a manual install? At a guess it is a possible vbmeta and disable-verity issue as that is the prior step before reboot to fastbootd. The tablet is on the latest Android 11 and it happens on Windows 11 and Ubuntu machines.

I have the same problem with the same tablet. If I understand correctly, to unblock the situation, I have to switch my tablet into EDL mode as indicated here for example: https://droidwin.com/boot-android-edl-mode/ and install UT manually? (as here: https://gist.github.com/thekosmix/1a7fc2308e9c9ea78bb4ad24bc0cda1a) I would not make another mistake...