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Catcrafts builds of the postmarketos image for the fairphone 6
97 commits 1 branch 1 tag 4.9 GiB
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  • Python 15.3%
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Jorijn van der Graaf 34c687d160 libcamera, libqmi, modemmanager: build for the cores the phone has 
Same string as the kernel commit, for the three compiled aports this image
builds itself: -march=armv8.6-a+fp16fml+aes+sha3+sm4 -mtune=cortex-a720
appended to CFLAGS (and CXXFLAGS for libcamera). abuild builds these with
Alpine's GCC; the string is gcc's own -march=native expansion on the phone
re-based on armv8.6-a, and it assembles on GCC 15 with binutils 2.45.1 and
on GCC 16 (whose -mcpu=cortex-a720 expansion binutils 2.45 rejects). On the
phone itself gcc -flto, g++ and clang all compile, link and run it.

The base stops at 8.6 on purpose: this phone exposes neither SVE nor MTE
(userspace autovectorised for SVE2 would SIGILL), and not WFxT either.

pkgrel bumps so apk upgrade delivers the rebuilt binaries.
2026-09-08 20:24:15 +02:00
.forgejo/workflows Install fingerprintd from the registry, so the image unlocks with a finger 2026-09-05 20:31:37 +02:00
aports libcamera, libqmi, modemmanager: build for the cores the phone has 2026-09-08 20:24:15 +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 0.3.3-r0: landline callers ring 2026-09-08 20:24:07 +02:00
check-aports.sh fp6-vendor-blobs: the checksum the extractor change forgot, and a check that finds the next one in a second 2026-09-05 22:26:33 +02:00
install.sh debian fix 2026-08-29 00:40:38 +02:00
README.md Update README.md 2026-09-06 14:00:13 +00:00

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, fingerprint unlock through fingerprintd, 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). 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 via android adb using adb shell dumpsys telephony.registry, 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.