ap7921 firmware version AOS v394 / RPDU v393
ap7921 firmware version AOS v394 / RPDU v393
Unzip and run the exe which will self extract and run the updater, follow prompts to login into pdu/ups.
I did have problems with login so I edited the iplist.txt and then rerun the updater upgrd_util file which then worked fine, may of just been a glitch.
Spent alot of time tracking down this version on the internet so hope this helps others