rb532 and ROS V3?

Hi, is good idea to upgrade ros 2.9 on rb532 on ros v3? Will be resources of rb532 enough to run v3?

yes, sure. a good idea will be to upgrade the bootloader too, after RouterOS upgrade. just do “/system routerboard upgrade”

Is possible then downgrade, back to 2.9, if any problems emerge?

yes, just upload old packages, and type “/system package downgrade”

Thanks for quick answer, and if I upgrade bootloader, how to downgrade it then?

bootloader you don’t need to downgrade