To install a new firmware version on a base station and/or handset, please follow the instructions provided in the firmware update guide.

• Version <= 480BXX can only be upgraded via http locally. Snom download server supports only https!
• After upgrading to version 450BXX or higher the rollback to 410BXX or previous versions is not possible.
• After uprading to version 530B9  you need to update all M5 Repeaters to use V530B2 . >V610 firmwares do not support M5.
• Please read the release notes carefully before upgrading.
• Please reboot the base station(s) (chain reboot in multi cells) before triggering the upgrade, to free up some memory and avoid any issues.