ecuhelp KT200 write Chevrolet Delco E39A and receive “error SK1”, “Error SilentKey” (shown as below).

How to fix ecuhelp KT200 “Error SilentKey”?
Delco E39A ECU is new with 5bit seed, please read password by io-prog, then read flash.

Video demo on I/O PROG Read Write GM ACDelco E84 ECU on Bench
The similar operate guide as E39A:

IO Prog image

ecuhelp KT200 tech support: