[Samsung Galaxy S7 Edge (Exynos) ROMs, Kernels, Rec] Mita99:
Hi everybody, a newbie here in the Android upgrade world on S7 edge. I love this phone and gave it a try to use with A13. All my remarks for newbies to avoid problems in the process of upgrading. Hope it helps.

1. Make sure your PC samsung usb drivers are up to date. Download it from https://developer.samsung.com/android-usb-driver. Install it and check the result of the installation with USBDeview. Google it and download, install, run. Check the presence of samsung drivers. I have got 6 of them. Connect and unconnect the phone, check the connection status changes from plain to green for the samsung drivers. This step is very important because Odin will hang out if the drivers are not in good shape.

2. Make backup from the phone. This step is one of the most important one. Connect the phone to PC and save all the photos and videos from the phone walking through on all the libraries. I used google backup, had 1.2GByte of it without pictures and I thought I am fine, all my apps and settings are backed up. Not. I was not able to restore my apps. Contacts were restored, but no messages, call history either, no apps. Luckily I made a "copy" of all the important apps on a Redmi 7, like Authenticator, pw manager and I was able to restore these from the Redmi to S7.

3. Download Odin3 from odindownload.com. Use this method instead of adb, fastboot, etc. If point 1 is OK, you will not have any problem downloading the install kits to the phone via Odin3.

4. Download twrp from twrp.me specific to the S7/edge. Select the 3.6.2_9-0 version instead of 3.7, it works for Android 13 even if it is mentioning only Anndroid12 as supported.

5. Download the lineOs image from the first post of this forum

6. Download the Nikgaps zip from the first post of this forum

7. Use the following Youtube video for the next steps, it is detailed:

. Do not brother about the Android 12 in the title, the steps are the same for Andoid13. Slow down the play speed when necesary to make sure not miss any steps, especially twrp functions recorded quickly and easy to mess. There is one crucial step when you have to be very quick: When finished twrp uploading to the phone and reboot with volume down-home-power button combo (combo1) the screen goes blank. At this moment quickly switch to the volume up-home-power button combination (combo2) to boot into twrp. Hold this combo until you see twrp screen. If you are not quick enough then you will boot into the stock recovery which displays "updating" and "file not found" messages. If this is the case than press combo1 again to go to download mode and combo1 again to leave dowloading mode. When the screen goes blank than very quickly press combo2 and hold it. I was sucessfully boot into twrp on the third attempt, do not give it up, repeat the process. All the other steps I found clear and these are worked for me. Mabe I am wrong with the combos, veterans could comment it to help the others.

8. The Lineos20 is installed on the phone, follow the initial setup instructions. For some reason I was not able to set up the fingerprint sensor in the initial setup. After the initial setup I added fingerprints in the Settings but I was not able to set the lock screen unlock function to use the fingerprint. Needs to be investigated.

9. Google play is your friend, install all of your apps and set them. Restore data files from the backups.

10. Stock browser was throwing some error messages in some cases but Chrome working well. Stock browser is disabled in Settings, Chrome jumps in with no problem.

11. Calls are not echoed. It is not a super audio quality but OK for me. Camera is basic but it is OK for me. Battery consumption seems to be OK, no excess drainage. NFC working with Yubikey 5 NFC. BT is OK.

12. Started to learn the UI, features, etc.

13. Banking apps usage - Magisk installation and setup. Use https://github.com/topjohnwu/Magisk/releases/tag/v25.2 link to download magisk on the phone download directory. Rename the file .apk extension to .zip. Copy the file and rename the copy uninstall.zip. If you want to deinstall Magisk later then use this uninstall.zip file from TWRP to do it. Enter into recovery mode, use TWRP to install the downloaded and renamed magisk zip file. To setup Magisk after install check the following video:

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14. If you reached this point without bricked your S7/edge and everything seems to be working than sit back, relax, drink a beer and do not forget to support Ivan, as I did via Paypal. 🍺🍻 Thank you Ivan all the effort! Do not forget to support your phone with new 3D curved screen protector and a new leather case! Your phone is re-birthed, like a new.

15. Time to time I will report back experience with the new install, how it works in the day to day tasks.