One big difference I see between the 1.1 and the 1.2 boards is the wifi header. The wifi header on the 1.2 seems to be the same header that comes on the Octopus and SKR 2 that supports the ESP-07S and ESP-12S. I have 2 extra ESP-12S boards. IF you get the 1.2 and PM me your address I will send you one of these and you can help me try to figure out wifi with Marlin.