i did it with Twrp, for me also with fastboot its not working (same error message as you wrote).

good news from my side. after a lot of trials (go back to android, wiping data partition, changing active slots... ) after some time the newest build is working. don´t know what it solved. thanks.

Hi,
Today i tried again some new builds, same result (also the last build from yesterday does not work).

What is also tried is to connect per ssh to 10.15.19.82 after booting the phone, but fails with:

Connection refused

Output of lsusb contains the line where the ssh connection should work:

  iSerial                 3 GNU/Linux Device on rndis0 10.15.19.82

Any (new) ideas for debugging?

Hi,
i made the same tests... same result.
boot.img and system.img from 24.1. works.
never boot.img with system.img from 24.1. works.
never system.img never works.

Hi, first thanks for the FP3 port, really nice to have it since a long time.

i have exactly the same Problem. The last build which is working is the one from 24.01. Newer Builds do not boot any more (no access with adb/ssh). Any information i can provide to find the root case?