That’s a very good question. It probably is a foundational problem with the Beaglebone chip that it has half an operating system on it – potentially preventing it from booting.
I do not know how in particular to fix it, perhaps there are other beaglebone users (unrelated to Chi.Bio) who have had the same problem online. If it isn’t taking a new flasher SD card then perhaps your only option is to buy a new beaglebone (they are not particularly expensive on their own)!
So in the worst case scenario it would work if i bought a new BB black and i could follow the exact steps from ur Software pdf without the need of any other setup regarding software?
The only difference would be that my username:password is debian:temppwd?
That is correct!
The software setup instructions in fact assume that you are starting with a completely stock-standard Beaglebone, so you should be able to follow them as written.