Buying a 605 with sound problem

[roejoh7]

Hi all - I've been offered a 605 unit cheap as Ive been told that when watching video after 5 mins the sound goes crackly (all vidoes..well films at moment)....would this be a firmware upgrade to fix problem? or something more sinister? The unit works fine apart from this and I only want the unit to record video from my helmet / bullet camera....Does this sound like at worst I would still get the footage quality and be able to transfer to computer? Also do I need any add ons to do this? Many Thanks

[CrowdAds]