I’m trying to install LineageOS 18.1 on my FP3+ following instructions from this forum and (mostly consistent) the LineageOS wiki.
bootloader is unlocked, LineageOS recovery is flashed
lineage-18.1-20211220-nightly-FP3-signed.zip downloaded and checked for integrity (hash code and also this LOS “Verify Build Authenticity” was successful)
adb devices says: serial no. xxx recovery (I always need to enable adb on the FP in recovery=> advanced).
Running adb sideload performs the zip download up to 47%.
Then the FP interrupts installation with message “signature verification failed”, error 21
continue installation anyway => yes.
Then installation step1/2 starts, running 20-30s and aborting with error 29:
error applying update : 29 (kdownloadoperationhashmismatch)
error in /sideload/package.zip (status 1)
(adbd status 10)
I found an error log containing these error messages (among many info/some warnings):
191.240118: update_engine_sideload E 01-25 07:31:22 513
error:delta_performer.cc(1853) hash verification failed for operation 271 expected hash =
191.240438 error:delta_performer.cc(1856) calculated hash over 698272 bytes at offset: 182313237 = 191.240677 error:delta_performer.cc(707) mandatory operation hash check failed 191.240738 error:download_action.cc(336) error errorcode::kdownloadoperationhashmismatch (29) in deltaperformer's write method when processing the received payload -- terminating process 192.797055 error:prefs.cc(85) storage_->deletekey(key) failed.
(Also tried TWRP once by booting, not flashing it. But with this one try the download aborted after 10%)
Any help what goes wrong here would be appreciated very much