Yah... i could point you where to read... and how to flash all things manually, but i won`t take any responsibility because of bricked devices.
If you`re linux-friendly, then you could do things almost easy, but now i doubt i know all about flashing of B series CI+ devices. Else FFB still supports it.
I don`t have B series for tests, it is up to you what to do.
By many requests, after some fixes, FFB CI+ version is available.