How do unlock a holden commodore with flat battery and the keys also won't manully unlock it as well?

To unlock a Holden Commodore with a flat battery and non-functioning manual locks, you can try using a slim jim or a lockout tool to manipulate the door mechanism from the window gap. Alternatively, if you have access to the trunk, you might be able to reach the rear doors from there. Another option is to jump-start the battery using jumper cables or a portable battery pack to regain electrical power and unlock the doors. If these methods fail, contacting a locksmith or roadside assistance may be necessary.