Does anyone know how to fix a bootloop? I have tried flashing a stock room using Heimdall but that only makes the phone show to Samsung logo show the erasing animation for a little bit and boots into download mode and show "Error validating footer (6)" . If I try to generate a vbmeta file with abvtool it shows the warning that says that unofficial software was installed and shows the unlocked bootloader warning and after that it reboots.

  • @alecxs Where should I find that file?
    – lol
    Commented Jun 22, 2022 at 5:59
  • @alecxs After un tarring the stock ROM. I found only a "vbmeta.img" file and no "vbmeta_samsung.img". Could this be because I downloaded the firmware from "samfw.com"?
    – lol
    Commented Jun 22, 2022 at 7:25
  • @alecxs So if that does not apply to my phone is there any other way to unbrick my phone or should I just try to flash "vbmeta_samsung.img" even if it is for another phone or version?
    – lol
    Commented Jun 22, 2022 at 8:35
  • @alecxs But after flashing TWRP all the phone does is show to unofficial software was installed, show the unlocked bootloader warning and reboot.
    – lol
    Commented Jun 22, 2022 at 10:35
  • of course easy way is flash stock ROM but it will re-lock bootloader and you might not able to unlock again because of samsungs restrictions. you can install TWRP and AOSP instead
    – alecxs
    Commented Jun 22, 2022 at 10:40

1 Answer 1


Try using the Samsung Smart Switch app for PC to restore the stock ROM.

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