I did use the EZ scan to do the update to 4.8 but it doesn't give you the ability to roll back if you want to.
I had nothing but trouble with 4.8 such as:
1- when doing a limit search it would not decode DMR or P25 channels only conventional.
2- When going to a scanlist of mine I lock on wildcard and no TG's come in
Now back to firmware 3.8 everything works normal again I will not look to update firmware anymore only DSP.
I don't see any advantage in 4.8 anyway.