Cyclone V: Fuse bit to bypass the BSEL pins

Hello, if you're still on it, this might be helpful - It was the response upon a support request that I made on this topic:

"The fuse bit is a security feature in the SOC, just that we did not emphasis much about this in Cyclone V TRM, let me provide some document that explain more about this item for your reading:-

1) https://www.altera.com/en_us/pdfs/literature/an/an556.pdf

2) https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/hb/arria-10/a10_5400a.pdf "

In the end, we couldn't use the feature for our purpose. Hope this helps!