Upgrading past firmware v1.0.12.120 for RAX 50

A question for the community, I had extreme issues with upgrading my firmware to v1.0.12.120 several years ago. This caused me to have to reset my router and do a lot of manual configuration every time I attempted this. I did notice a lot of others had issues with this release as well. Have any of you who had problems with v1.0.12.xxx upgraded past this to v1.0.16 (or lower) and had a stable experience? In general my router has been very stable but I would like to update the firmware and keep more current, I just don't want to spend hours trying to restore everything again.

Thanks,

Dave