Hi everyone
i cant seem to update my os at all.
i am using version 1.0 os and the old ndless.

when i use computer link software (i tried both newest and a fairly old one)
wen i update it downloads and almost finishes installing the os.
when it looks to almost filling the bar, it says 'error corrupted file'
I HAVE TRIED BOTH 1.7 AND 2.1
How do i upgrade my calculator???
school starts soon and everyone needs a at least 2.0 calc