I am visiting with a client tomorrow to perform some service work for him and want to update his RA2 system to the current version. I have not been there since April of 2015 when I last updated his firmware (probably 8.1 or 8.2). Does Lutron recommend upgrading his firmware and jumping over the other versions to 9.3? Or is a more gradual version by version upgrade best practice?
Thanks, greatly appreciated.