Switch From Dev to Stable Branch

[luettl]

Hello,

I have on my Fairphone 3+ the newest OS of the Dev-Branch 1.10-s-20230413279105-dev-FP3
I see here that I would probably lose all my data if I switch to the stable-branch.

Switch from s-dev branch to s-stable branch?

Hello, My FP3+ is currently running 1.9-s-20230311268558-dev-FP3 build. The FP3+ offers me to update to /e/ OS 1.9.1, I guess on the dev branch. I would like to switch to the stable branch at the same time I update from 1.9 to 1.9.1, updating to the e-1.9.1-s-20230405276851-stable-FP3 build. I have first downloaded https://ota.ecloud.global/builds/full/stable/FP3/IMG-e-1.9.1-s-20230405276851-stable-FP3.zip but if I do adb sideload IMG-e-1.9.1-s-20230405276851-stable-FP3.zip it tells me ri…

What would be the easiest way to backup and restore my data?

With TWRP I see, that there is “data (storage excluded)” on Backup. I don’t know why.

P.S.
When I tried to upgrade with adb sideload the images that are linked didn’t work as described here: https://ota.ecloud.global/api/v1/FP3/dev “Failed to find update binary Meta-In/com/google/android/update-binary” The other links were misleading in the contex oft adb sideload

[ff2u]

@luettl

With TWRP I see, that there is “data (storage excluded)” on Backup. I don’t know why.

That’s a TWRP design decision. You might consider to use a tipatched TWRP version. But anyway - I think TWRP is unable to decrypt (and so backup) the internal storage of the “s” version (see e.g. also here).

@luettl

When I tried to upgrade with adb sideload the images that are linked didn’t work as described here: https://ota.ecloud.global/api/v1/FP3/dev “Failed to find update binary Meta-In/com/google/android/update-binary”

AFAIK the current FP3 dev and stable versions are to be flashed via fastboot (well, there’s a shell script doing this) and not applied via adb sideload (was different in the past).