Fritzbox 3390 firmware

[#1]

Hi,
Just wondered if anyone who uses a Fritzbox 3390 has upgraded to the latest firmware 6.20?
Any problems at all or has it all been trouble free?
Thanks for looking in.

[#2]

I always keep my (7390) up to date, this model has been on 6.20 for quite a while with no problems.
AVM tend test thoroughly before releasing new firmware, I've rarely, if ever, found any issues.

[#3]

Thanks for the reply.
I've seen some reports of Wi-Fi issues since the update with some models on the AVM Facebook page hence my apprehension to upgrade.

[#4]

In the relatively unlikely event of problems, there's always a downgrade image to revert to 6.04 here: ftp://service.avm.de/Downgrade/FRITZ!Box_3390/english/

[#5]

Thank you that's very helpful.

[#6]

Well I have tested firmware 6.20 for my Fritz 3390 and unfortunately the Wi-Fi coverage is significantly reduced with frequent dropouts 
Thanks again for the link as I will certainly be reverting back to 6.04.

[#7]

Thanks for posting, I guess that might help someone else having the same problem.
I couldn't find much on this problem by Google search so I have no idea whether any other models might be affected (I only know that my 7390 does not appear to have problems (none that I've noticed anyway)).

[#8]

Now reverted back to 6.04 from 6.20.
One thing to bear in mind when you do this is that it will wipe your settings back to the factory default so make sure you have taken a recent settings backup.
Once on 6.04 the difference in Wi-Fi coverage and speed is like night and day.
A real shame as there were some new options on 6.20 which I really liked.
I have also raised a support ticket with AVM.