Hi Ben,
DON'T do the upgrade, seriously don't do it!!! I think you will have more control for now if you using the older system! Wait until a new API documentation arrives!!! I wish I haven't made the update! Maybe may post was to optimistic, BLE works but not very well indeed! I think many bugs are related to timing problems but I can't prove it right now.
Regards,
PeterVanPansen