That might however make sense since even the network card can't communicate with the UPS. Just a blank putty terminal (pressing enter does nothing).

The UPS also has a serial interface besides the console port, but I get no output at all when connecting to this. Here there were something that looked like a CMOS battery, and we decided to try and remove that, cut the cord and batteries, then reboot. We then decided to open up the big boy, and look if there was something to do on the inside. If I however try to select something like 'upsabout', I get an error saying 'E107: Serial communication with the UPS has been lost'. If I then connect to the network interface through console, with the cable that comes with the UPS, I can also see and change config on the network card. If I try to access anything related to the UPS itself, I am told that the 'UPS has no valid firmware'. If I access it through the web interface, all I can see and do is something with the web interface and its configuration. The network interface can still be reached, but it is almost like the network card cannot see/talk with the rest of the UPS. That did however result in it being permanently stuck at 'Update in progress'. Now, the one that does have a problem starting up, was taking a very long time to finish, almost like it was stuck, so we decided to cut the cord and reboot it. (Model: SRT6KRMXLI)īefore we tried to update it on the one with problems, we updated another one which went through without a problem. We have recently tried to update the firmware on an APC UPS. This is kind of a long shot, but I am trying anyways.

Apc firmware update wizard