@resistencia I know this is a bit of a strange question. Why use firmware v2.2_2.2.6 on an er605 V2.0? The thing is that v2.0 is not the official version for my region and I have been having problems...

Will it be possible to load the Er605 V2.20 router Firmware on an Er605 V2.0? The latest Firmware 2.2.6

@Josvell My solution is to migrate to a company that makes quality routers and not toys.

@Josvell Is there anyone who can tell me if this error is due to a configuration error or something like that?

@MR.S I reinstalled the Omada controller and also Java 8 update 811 and the failures continued and I could not use the cfg backups so I decided to update java 8 to update 821 and everything started...

@MR.S thanks for answering friend. I'm going to reinstall java 8 64bits. I also have java se development kit 21.0.3 (64bits) on the same PC that runs omada, there would be no problem, is that correct?