New Firmware 10.1.0

[Hellsuper]

After upgraded to fw 10.1.0, i cannot downgrade to 10.0.5 version,  anyone same as my problem ?

I am using D200, tried to load 10.1.0 fw. Can upgrade again. But 10.0.5 no respond.  

I've a plan to do this. Have been running 10.1.0 for some days now and like it. Want to go back to 10.0.5 briefly just to check. Which model do you have?

I'll hopefully get to do the downgrade this evening. Will report back.