I bought a used un-rooted Note2 that I rooted while it was on 3.3.1 with the help of Renate and others on this forum.
I installed apps and set it up the way I wanted and eventually updated to 3.3.2. Because it was used, the battery was very poor, so I ordered a new battery. Battery life it great now, but I've decided to sell it. To prep it for sale, I tried the built-in Android/Onyx Factory Data reset, but it never fully wiped the device. It just resets a few settings, but all my stuff is still on there. I then tried combinations of buttons while powered on and off (power and back) but it never presented a menu or gave an indication it was in recovery. So I decided to do the following:
adb devices
adb reboot bootloader
fastboot devices
adb fastboot -w
The last command, fastboot wipe of data/cache, threw the following error:
Erasing 'userdata' OKAY [ 1.991s]
mke2fs 1.46.5 (30-Dec-2021)
/tmp/TemporaryFile-Tts9hX: Unimplemented ext2 library function while setting up superblock
/usr/lib/android-sdk/platform-tools/mke2fs failed with status 1
fastboot: error: Cannot generate image for userdata
Now on boot it appears to be bootlooping. I see the Onyx splash for a few seconds, then blank, then Onyx, blank, over and over. I am able to hold power button to turn it off, but any attempt to turn it on or get to a built-in recovery menu fails.