VBLUE42

Hello!i have bought my firs car last month,and it has a Pioneer unit installed. It is the pioneer avic f710bt.i want to try some mods from here,but before,i want to make some backups to be safe in case something goes wrong. Can you please help me with answering my qestions,please? I have made a backup of My Flash Disk using Testmode.I have put Test mode on a sd card and put it in the unit.here i selected the My flash Disk folder,and copied to my sd card,to have a backup. Is it ok what i...