MiLight bridge firmware

Hello !
is it possible to replace in the wifi bridge the new firmware V4 by the old one V2?
thank you

I think not. But I have brick the V4 with: LPT100_HFV1.06_05_2MB_20141127.bin
You can make a static IP adress etc.
Just google, watch out, don’t do a factory reset, I have all ready demage a wifi-bridge.