Hi

I’ve bought myself a used Biqu B1 with a BLTouch for a fair price. The seller said that he never got the BLTouch working. Now I`m trying to get the auto leveling to work, but every tutorial and video shows the ABL option in the menu, but i do not have that option. The BLTouch is connected as every video and instruction manual shows, the sensor has flipped down a couple of times so that too is working, and the red led-light i always on. Other menu-guides shown in different internet tutorials also shows minor menu variations from my printer.

Some useful info: System: Marlin 2.1.1 Board: Bigtreetech_TFT35_B1_V3.0 Firmware: TFT35_B1_V3.0.26.x Me: Complete noob with no knowledge of 3D printing lingo

What should be done to get the ABL option in my menu?