hello, i have this dvr iDS-7216HQHI-M1S, it shut down while updating, i know how to restore firmware using ttl
my pc ip is 192.0.0.128
i can ping with 192.0.0.64
i open putty then pressed ctrl+u to stop autoboot...
the start of line is HKVS $
when i insert: setenv ';printenv' no thing happens at...