[HOWTO] Upgrade my /e/OS to major Android version without loosing /data

[piero]

@kipry

The 4.0 a16 community version doesnt include firmware or payload.bin file.

The firmware related partitions are expected to be included into the payload.bin file aside the system related partitions.

Please extract https://ota.ecloud.global/community/FP4/e-4.0-a16-20260610633938-community-FP4.zip using payload-dumper-go

payload-dumper-go -l /home/alexander/Downloads/Test/e-4.0-a16-20260610633938-community-FP4.zip

You must find :
abl (156 kB), aop (180 kB), bluetooth (963 kB), boot (101 MB), core_nhlos (115 MB), devcfg (45 kB), dsp (67 MB), dtbo (25 MB), featenabler (90 kB), hyp (410 kB), imagefv (537 kB), keymaster (266 kB), modem (153 MB), multiimgoem (16 kB), odm (1.6 MB), product (848 MB), qupfw (57 kB), recovery (101 MB), system (1.7 GB), system_ext (558 MB), tz (3.0 MB), uefisecapp (127 kB), vbmeta (8.2 kB), vbmeta_system (4.1 kB), vendor (677 MB), xbl (3.4 MB), xbl_config (98 kB)

So it include needed a16 Fairphone firmware partitions

and not only the /e/ system partitions.

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@kipry

i wanted to “dirty upgrade” from 3.7.3. a14 offical (current version of my fp4) to 4.0 a16 community without losing data

@piero

you will face a signature mismatch (between what is expected by the “official” recovery and what “community” build show), simply choose “install anyway”