Bought a BL Touch about a year ago for my Ender3 v2 and trying to figure out what firmware to use . It has a 4.2.2 motherboard and it’s plugged into the connector for it. I should add I’ve tried every download that has BL touch and Ender3 v2 4.2.2 .
I did get 2 firmwares to work yesterday . Level worked and it printed successfully .
Today is another story . It won’t level . What it does instead is go to 0x 0y ,move to center , go up 10mm , the BL Touch blinks a few times , stops blinking for a couple of seconds before continuing . All the while the screen says " Bed Leveling Please Wait Until Done " . I have left it blinking for over 2 hours . I’ve double-checked for loose connections and didn’t have any .
I don’t know what else to do .
Hello @Gerald-Leingang and Welcome to the Creality Forum…! 
I don’t know anything about the Ender 3 V2 but I did some checking to see what firmwares you could use. You might have already seen this page. Also before you do a firmware update try to set it back to factory defaults and see if that helps…
Ender 3 V2 Firmware download page
Printer: Ender-3 V2
Printer Mainboard: V4.2.2
Notes:
The firmware is Ender-3V2 CR-touch/BL-touch version.
Display firmware update：
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Put the file “private、TJC_SET、DWIN_SET” into the TF card.
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Insert the TF card into the screen card slot.
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Restart the machine and wait for completion.
Mainboard firmware update：
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Put the firmware file “GD-Ender-3 V2-Marlin2.0.8.2-HW-V4.2.2-SW-V1.0.7_E_N_BLTouch.bin” into the root directory of TF card.
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Insert the TF card into the card slot of the printer.
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Reboot and wait for the update to finish.
Also this video might have some good info even though it’s not for the BL touch version:
I did install that firmware .I did trace my problem to my BL Touch .
On top of it ,there’s a small magnet that looks like a set screw . By raising it so it touches the adapter bracket , I cured my problems . It also changed the z axis offset to -3.00 mm .
That’s a lot of offset… Is it printing correctly now…?
It prints perfectly . About the z axis offset - my brother has the same printer with a CR Touch and he uses the same offset .