FLS-PP Dresden Elektronik

I’ve been switching products from Philips Hue and I’ve removed my last Philips bulb from the system and have added 2 of my 3 FLS-PP directly to HA without any problems but the third one is not being discovered during onboarding. The other 2 were fine, discovery went without a hitch but this 3rd one is proving to be a bit of a pain.

I’ve done the reset process, (power on/off cycle) and that seemed to work okay as in the LED strip flashed at the end of the sequence and then went to a what looked like default mode (pure white, 100% bright?) but still no dice. I can add it back to Hue hub without a problem and research says that there was an issue with earlier ones locking into a channel or a device? Can’t find much more on that or which firmware version it was etc.

Question is, is there a way to update the firmware or unlock it from the channel/change HA channel to match?

I deleted the device from the Hue before trying to add it to HA. ‘hardware platform version’ is 1135-0 and software is 020, if that means anything to anyone. I assume it’s like a firmware version.