Hello and what a nice post
I am not 100% sure on the problem is the cable completely snapped or is it the cable clips?
I have never come across this issue but it does sound like it might have something to do with the lack of Blu-Ray drive but i may be mistaken.
Do you have access to a new cable or have a way to acquire one such as eBay or something similar?
As far as i am aware there is no other way to switch patches apart from FTP if only there was a cabled way to do this instead. *Sigh*
I hope you find someone who can help more into this problem and maybe offer a little better advice than what i have.
Hopefully the 3.55 will live still instead of being closeted
Good Luck