OK, now I’m ready to try it tomorrow, or even today.
My first question is, because I went for the XDA flashing instructions, and there were none. Does that mean that I should unpack:
vbmeta.img
and
recovery.img
From e-3.0.4-a15-20250720-UNOFFICIAL-m21.zip
And install it the same as in case of Galaxy A70?
Doing (after the unlocked OEM and then in the download mode):
heimdall flash --VBMETA vbmeta.img --RECOVERY recovery.img --no-reboot
Or just flash TWRP and from it, sideload the whole ROM?
My device is m21 (sm-m215f/dsn) and the Android version is 12.
***Update:
Nevermind, I just readed the previous post of @piero, and now I understand why do I need vbmeta.img:
On “recent” samsung device, when coming from stock rom you need disable encription or flash a blank vbmeta.img is mandatory to be abble to flash recovery.
***Update and Test:
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It’s booting
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Banking apps are working, except Revolut and others that desire for the bootloader to be locked (I don’t know if it’s possible to relock it?). Installed from Aurora Store.
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microG is working as it should (self check OK, all options).
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2D acceleration is working (1440p YouTube 60fps flawesly, and a weird bug that 1080p60fps the same video is stuttering, but not 1440p60fps and not 720p60fps).
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3D acceleration is good and working, tested on Crossy Road no stutters, much playable, better than A70.
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The phone is encrypted (it says that I suppose), can set up screen lock, and fingerprint without problem.
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Phone works with LTE, both Sim’s, tested and the speed is the same or more than the original (Original the same place in home: 35 Mbps and on /e/OS 42 Mbps). Calling works, recording works only on the paper, it allows recording, but no recordings after call ends visible anywhere on the phone.
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Bluetooth works (pairing with new codecs headphones), Wi-Fi works.
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Murena Account works and synchronizing contacts and others (I don’t use other features, only contacts, so didn’t check other, but it shows sync in progress).
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Cameras (both) are working and recording video, and making pictures, both lenses.
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Network meter works, shows variable Megabits upload and download. Battery % is also working.
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Other browser like Brave is working (installed from Aurora).
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Location and GPS offline (airplane mode) is also working and locking position, but with caviat of seeing only 8 satellites, where other phones sees 30+ in the same spot. The funny thing is that those 8 satellites have very strong signal, so it’s probably not a hardware problem.
Other minor bugs. I cannot change the wallpaper of the second virtual desktop, the background is just black and the icons on the bottom are lit by the proper background.
If you want me to test it further, just ask for it, and I will do it.
Below is the picture explaining the background bug.
