Help with install crDroid

[idea]

E:filed to verfy whole-file signature Update package verefication took 61.4 s (result 1).

i install the recovery (mb succesful because i havent error )

[piero]

Hello @idea,
Here it is an /e/OS users forum.

[HOWTO] Give complete /e/OS version info easily for support, answers, comparison etc

If you read just the start of this text because it gets cited in the forum: There are screenshots here, please have a look at them before assuming you know what this is about. Thank you! As they say, every hint has its history . Where were we? Ah, yes … You are running /e/OS on your device and want to give info about your version to get support, or a simple answer to a question, or anybody else to confirm whether they can observe the same behaviour you observe? Sure … Your device will …

@idea

install the recovery

According to documentation, you first need to flash a custom recovery.

Instructions for Galaxy M12 (XDA thread)

[HOWTO] an Unified Install Guide Project for /e/

posts are editable as a Wiki. Here is the summary : (1) install the appropriate Flashing Tools (2) allow “Non Vendor OS” to be installed on the device (3) Check the communication between the PC and your smartphone (4) Download a custom recovery manager (5) Download an /e/OS build (6) Unlock the Bootloader (7) Flash a custom recovery manager on your device (8) install /e/ from your computer, using the “adb sideload” method or (9) Install /e/ without computer using the “Device-Storage…

[Xxpsilon]

Help with install crDroid

XDA: crDroid 8.11 for Samsung Galaxy M12 [M127F M127G F127G]

Instructions
Follow the instructions here (read the whole instruction before you do any modifications to your device)