A way to revert to a prior version of firmware

i want to downgrade to a prior version of the p1s firmware but the handy app will not let me. another question is if i want to put my printer in lan mode how can i get the access code if my little POS screen doesn’t work

What version are you at and what version are you wanting to go to? The Handy app is the only way I know of to revert to a previous version other than flashing via SD which is only available in v01.07.00. and up.

I want to go back to 1.07. But to do that I need the little screen to work and it doesn’t so I may as well stay till the send me a new screen