Garmin R10 concerns

Hi, I have pre ordered a garmin R10 unit due for dispatch at the end of this month and I am now worried after seeing a few reviews picking up issues with ball flights\directions and distances etc, this morning I came across an article stating that garmin have mentioned there is a hardware issue with the r10, can I have some confirmation that this is a potential problem and what can be done should I receive a unit that has not this hardware upgrade?

Regards,

Nick.