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[piero]

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

. [e] . since android T (13), lineageOS builds on witch /e/OS are based are expected to include the needed updated firmware partitions to make the build compatible without having to go back reinstalling the Stock OS (usefull for first install, AND even more for upgrading custom android version) for most of the supported devices.. In order to be sure it is really possible, you must answer those 4 questions : . What was the android version of the StockOS installed before /e/ ? What is …

@piero

In order to be sure it is really possible, you must answer those 4 questions :

.

1. What was the android version of the StockOS installed before /e/ ?
2. What is the latest available StockOS android version but not higher regarding to the android version of the /e/OS build you want to install ?
   Or what is the precise StockOS version required as a base to install the /e/OS build you want to install

• If answers to 1 and 2 are the same, you can have a go for dirty upgrade !
• If answers to 1 and 2 are differents, you must answer to questions 3 or 4

3. does latest /e/ build include the upgraded needed parts of the firmware ?
   download it and have a look inside the .ZIP (you may need to extract it)
   what to do if you find a payload.bin file ?
4. does Lineage wiki offer a firmware upgrade solution for this device ?

• if answers to 3 and 4 are no, you will have to install latest available full Stock OS (relative to the android version of the /e/ build you want to install → not higher), then reinstall /e/OS from scratch.
• if answer to 3 is yes, you can have a go to dirty upgrade /e/OS.
• if answer to 4 is yes, you can have a go for dirty upgrade the firmware, then dirty upgrade /e/OS !

@piero

to do it, you have several options :

they are the same as for regular update…
.

(it is recommended to take a backup of your things in case)

download the latest /e/OS build for your device
it must be named like e-3.2-a15-20251023539369-community-instantnoodle.zip

if you found something named like IMG-e-3.2-a15-20251022539003-official-FP6.zip
use the right clic to copy the link, paste it in the adress bar of your browser, remove the 4 IMG- carracters and press enter to download e-3.2-a15-20251022539003-official-FP6.zip

.

1. download the file on the phone, go to “→ settings → system updater” and use the feature called “locale update” (if you have it in the “3 dot menu” at top right of the screen).

or

2. download the file on the phone, reboot the phone into 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, reboot the phone into the recovery mode and use “apply update” then “from External SDcard” (if your “recovery mode” have the feature).

or

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

.