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My relative's Samsung Galaxy A20e smartphone got stuck while reading SMS. I wanted to help him and pressed buttons for reset, but only a black screen appeared, now it gets stuck at booting. I can enter recovery mode but can't even do a factory reset because he doesn't know his Google email and password. But before that, I want to rescue all the data on the smartphone.

I tried Android Debug Bridge, but he hasn't activated USB debugging, so I'm only able to do adb sideload. I tried TWRP by sideload, doesn't work. I know Odin on Windows to install alternative custom ROM, but I'm now on Linux.

What software can I use to install custom ROM and TWRP, or what can I do to rescue the data on the smartphone - images, phone numbers, addresses? Do I have to unlock the bootloader before I can download a custom ROM?

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  • Last line of your question. To install a custom ROM, you would need to unlock your bootloader, which would wipe all the data on your dad's phone//Same with factory-reset //As far as I know, there is no way you can access the data on the device
    – beeshyams
    Commented May 1 at 12:29

1 Answer 1

Reset to default
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What I tried:

Finally, the phone was reusable.

My mistake: I didn't flash HOME_CSC, I did flash normal CSC. I read that HOME_CSC would not clear the data of the smartphone.

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