OSRAM LIGHTIFY Classic B40 Stopped Working

I have four OSRAM LIGHTIFY Classic B40 bulbs in my setup and they have been working fine for over a year, but in the last week or so they have started playing up.

Most days they won’t switch on without being reset and they sometimes they won’t switch off.
Has anoyone else had this problem recently ?

I don’t have the Lightify hub so can’t update the firmware and I am still running Version: 0x01020314 according to SmartThings.

Is it worth me getting the hub just so I can update the firmware or is there another bulb I can use without getting yet another hub ?