MK3S+ Firmware Upgrade nag notice  

MK3S+ Firmware Upgrade nag notice

Hi all, I'm having a problem that a few have had and some have found a fix but I can't seem to. I am using prusa slicer 2.6.0.alpha 4 but as I have a revo nozel I can't upgrade to the firmaware 3.12.1 as I get the dreaded thermal error. but when I slice a part and either send it to the printer via prusa connect or via the SD card i get a message on the LCD display telling me there is a firmware update and i need to update. the printer then waits for me to press the knob to carry on.

So how do I get rid of this message? I've tried several times to upgrade and the connect with pronerface and sent the commands to turn off the error, but pronnterface just says sending and never does, the home controls don't work and i only have com 3 to choose from. It seems to connect to the printer but that's as far as it gets.

Help, or do i just stop on prusa slicer 2.5 and firmware 3.11.