I’ve managed to get as far as the recovery-e screen, but when I upload the recommended e-1.21-t-20240324389105-dev-gta4l.zip file (using adb sideload e-1.21-t-20240324389105-dev-gta4l.zip), it gets to just over 40% before giving up with this error message:
This package requires firmware from an Android 12 based stock ROM build. Please upgrade firmware and retry!
The device is running Android 12 and is fully up to date.
This problem is reproducible (ie happens every time I get this far). I’ve flashed the most recent firmware with the same results.
I note the e zip is for Android T, ie 13, but can’t find any 12 builds for this device.
Any suggestions how to get past this? All help appreciated.
Update have also tried with the e-1.21 zip file linked to from the above page. This gave up with the following error message:
Target SPL@ 2024-01-05 this is considered a downgrade
Denying OTA because it’s SPL downgrade
If you have Samsung T505XXS7CXB1 (rev7bit) security patch 2024-01-01 already installed,
You cannot flash Samsung T505XXS6CWI2 (because rev6bit) security patch 2023-08-01
But you should be abble to install /e/OS e-1.21-t-20240324389105-dev-gta4l,
because this /e/OS v1.21-t version includes the Android security patches available until February 2024 (2024-02-05)
I am sorry to not have any idea to propose to fix that is a false error, only thing i see is open an “issue” on the Gitlab /e/ developpement plateform. (https://gitlab.e.foundation/e/backlog/-/issues/7914)
One possible even improbable workaround : have you tried using the SDcard method instead of the adb sideload method ?
No official /e/OS-S (A12) build exists. e-1.20-t-20240222 was the first release after which the SM-T505 was first officially supported by the Lineage Android Distribution in 2024.
