Catcrafts/fp6-img
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Catcrafts builds of the postmarketos image for the fairphone 6
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Jorijn van der Graaf 877fe92a4b
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imsd: sign from a readable copy of the abuild key 
Run 49 died in section 3b: pmbootstrap's abuild-keygen runs inside the
chroot as its own user (uid 12345), so the key in config_abuild/ is 0600 to
that uid and the build user cannot read it; openssl dgst -sign exited 1 and
apk-resign.py swallowed its stderr. Take a private copy via sudo for the
duration of the re-sign, and make the script name an unreadable key and let
openssl's stderr through instead of hiding it.
2026-09-02 17:21:30 +02:00
.forgejo/workflows imsd: install the published apk instead of building it 2026-09-02 16:11:50 +02:00
aports imsd 0.3.1: aport ownership moves to the imsd repo 2026-09-01 18:26:33 +02:00
.gitignore gitignore dist/; fix empty then-branch (sh syntax) in the NV verdict 2026-08-09 02:44:39 +02:00
apk-resign.py imsd: sign from a readable copy of the abuild key 2026-09-02 17:21:30 +02:00
build.sh imsd: sign from a readable copy of the abuild key 2026-09-02 17:21:30 +02:00
install.sh debian fix 2026-08-29 00:40:38 +02:00
README.md readme change 2026-08-28 00:59:45 +02:00

README.md

fp6-img

Flashable postmarketOS images for the Fairphone 6/6+, built nightly from the Catcrafts milos-linux combined-stable kernel branch, with imsd (userspace VoLTE) preinstalled.

Maintained by Jorijn van der Graaf (TheMightyCat) at Catcrafts.

What works

Everything on the combined-stable branch: display, touch, wifi, cellular data, NFC (reader), speaker audio, microphone, IMU, magnetometer, barometer, ambient light/proximity plus VoLTE calls (both directions) through imsd.

Flashing

Download fp6-img.tar.xz from the latest release and unlock the bootloader (Fairphone's official process).

Install: with the phone in fastboot mode,

tar xf fp6-img.tar.xz
cd fp6-img
./install.sh

install.sh erases dtbo, flashes the rootfs, RAM-boots the kernel, writes the boot partition from inside Linux where the bootloader's NV-wipe cannot see it, then reads the modem NV back and reports the result. The bootloader never writes boot.

Default login: user / 147147 (same as official postmarketOS images — change it). Never re-lock the bootloader with a custom image installed.

VoLTE configuration

imsd is installed but needs your carrier's P-CSCF address:

# /etc/imsd.env
PCSCF=<your carrier's P-CSCF IPv6 address>

Find it in a stock-firmware capture or your carrier's IMS documentation, then systemctl restart imsd (the service is enabled at boot and waits for this file to exist). See the imsd README for the full variable reference and carrier assumptions.