Stereo volume & Tunepoint USB questions

When i turn the stereo on the volume is always at 15 even if previously on turning it off it might of been at 10 or 20, is there anyway to disable this?

USB stick wise i am having trouble getting an 8Gb stick to be recognised, it tried to start playing the MP3's then stops and the egg timer comes up which lasts for a good number of minutes before it says something about file corrupted.
I can get 1Gb and 2Gb sticks working ok formatted in FAT however the 8Gb can only be formatted in FAT32 (due to FAT limits) or should i be formatting this in exFAT?

Also when setting the playback to "random" it plays each folder randomly before moving onto the next, is there any way to get it to play all MP3's in all folders randomly as a whole? Or is the only way round it to put all MP3's in the root (ie not in folders)?
 
Is this a dealer only thing that can be done or is there some software update i can do via USB or something?
 
Dealer via obd port mate.

Forgot the actis solution number though.
 

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