Firmware V1.0.9.66 -

If you cannot find specific reviews, for v1.0.9.66. Then compare with user feedback on the previous version – often upgrades are safe if no major complaints appear in forums within 1–2 months of release.

If you decide to install this (or are currently on it and having issues), Netgear recommends the following process for the best results: firmware v1.0.9.66