Hi everyone,
not sure if I am in right place as a newbie today.
I'm trying to install PRS+ onto my 505 but keep getting the message:
"Sorry, this firmware version is not supported. 505.1.200.18050"
I thought it might be because its an old version but all new versions I download dont seem to have the 'installer' - can someone advise me where I am going wrong please?

and