Comment mettre une version précédente d'e.os sur FP3?

[piero]

Tu peux aussi utiliser la methode officelle si tu modifie le script :

@piero

@freechelmi

Is there an official upgrade path from 1.20-S-stable to 2.X-T-official ?

• yes, use the install script of latest version (S,T,U) → it will erase user data on the phone.
• one can try to modify the script to not format data (CLEAN_FLASH=true to false).

#!/usr/bin/env bash

Target device info

PRODUCT=“Fairphone 3”
PRODUCT_ID=“FP3”

Target Flashing Images info

FLASH_AB_FW_IMGS=“modem sbl1 rpm tz devcfg dsp aboot mdtp lksecapp cmnlib cmnlib64 keymaster”
FLASH_AB_IMGS=“boot dtbo system vbmeta vendor”
FLASH_A_IMGS=“userdata”

Target flash process behavior

CLEAN_FLASH=true
VIRTUAL_AB=true

source factory.common

Common flashing function

flash_factory