How to backup before reinstall e/OS

[piero]

Hello @klatu, Welcome to the /e/ users forum.

@klatu

Or I must backup all my data with these tips : How to Backup and Restore your /e/OS phone

i think this is the better advise.

@klatu

I have to reinstall with A15

you can better dirty upgrade, this old topic is still valuable for android 15 based build

@piero

HowTo perform a dirty upgrade to “/e/OS-T” from a previous /e/ version ?

→ it is as simple as a dirty update…

there are multiple ways :

1. download the file, go to " → settings → system updater" and use the called “locale update” feature if you have it in the “3 dot menu”.

OR

2. download the file, boot the phone to the recovery mode and use “apply update” then “from internal storage” if your “recovery mode” have the feature.

OR

3. download the file on a SDcard, boot the phone to the recovery mode and use “apply update” then “from External SDcard” if your “recovery mode” have the feature.

OR

4. download the file on a computer, boot the phone to the recovery mode and use “apply update” then “from ADB” :

because the e-a15 build for your device include needed up to date firmware parts :

piero@HP-p6-2038fr:~/Téléchargements/bidoulles/extract builds content$ ./payload-dumper-go -l e-3.2-a15-20251023539369-community-instantnoodle.zip
Please wait while extracting payload.bin from the archive.
payload.bin: /tmp/payload_174049986.bin
Payload Version: 2
Payload Manifest Length: 108584
Payload Manifest Signature Length: 267
Found partitions:
abl (225 kB), aop (205 kB), bluetooth (455 kB), boot (101 MB), cmnlib (401 kB), cmnlib64 (520 kB), devcfg (57 kB), dsp (67 MB), dtbo (25 MB), featenabler (90 kB), hyp (451 kB), imagefv (1.2 MB), keymaster (266 kB), logo (344 kB), modem (192 MB), multiimgoem (16 kB), odm (81 MB), product (587 MB), qupfw (57 kB), recovery (101 MB), storsec (25 kB), system (1.6 GB), system_ext (554 MB), tz (3.2 MB), uefisecapp (127 kB), vbmeta (8.2 kB), vbmeta_system (4.1 kB), vendor (542 MB), xbl (4.0 MB), xbl_config (94 kB)