ECUHELP KT200 Chevrolet Delco E39A Error Silentkey solution

When using ecuhelp KT200 to write Chevrolet Delco E39A, get “error SK1”, “Error SilentKey” (shown as below).

This ECU type of Chevrolet Delco E39A is new with 5bit seed,you need to read password by io-prog, then read flash.

Related video demo for your reference: I/O PROG Read Write GM ACDelco E84 ECU on Bench
The similar operate guide as E39A: