GE / ITI / UC Commander 817 Codes

Both keypads may look alike, if changing codes one way doesn’t work try the other
Master Code 1
Secondary Code 1
Hostage Code (First 2 digits of User Code + 99)

Commander 8
Change Master Old Master Code + 5 + New 4-digit Master Code
Add 2nd Code Master Code + 6 + New 4-digit Code
Erase 2nd Code Master Code + 6 + Master Code again

OR (if the above doesn’t work)

Commander 17
Change Master Old Master Code + STATUS + 8 + New 4-digit Master Code
Add 2nd Code Master Code + STATUS + 7 + 4-digit Code
Erase 2nd Code Master Code + STATUS + 7 + Master Code again
(Version 2.6 Commander 17 can have 4 more codes, only be added by downloading)