Hello Victron Energy,
After updating my MP II 48/5000/70 to V489, I am facing a frequency issue. I changed it to 60Hz. and save the change, but it still shows 50Hz. on the V.E Configure 3, problem that I did not have with the V487. This frequency issue causes all UPS backups to beep a lot because the frequency is 50Hz. instead of 60Hz. Maybe the V489 came out with a bug.
Please, fix it asap!
Best regards.