I think you all should call Apple support and do an exchange thru Apple Care till u get a perfect zero degrees device. We dont pay 900$ or 900 Eur for their "beautiful eyes", we pay for what they promise us .
I did and i got a perfect device right now.
Even they are aware of the issues, the faulty devices will be sent back for a repair in their factories or in their labs and then refurb on Apple Store. So just tell apple support that devices are faulty and u cant use Apps like advertise by Apple, coz datas are wrong coz of faulty sensors....
I have already given my feelings about a software patch :
A software update is surely complicated to do when u know u have different firmwares wrong on some lines and not all .
They have to check whitch lines and whitch calibration errors for each.
The best software update could be the manual calibration that dont mean a firmware calibration of the sensors . But if they dont want, they have to check serial numbers to determine where the device come from and if they cant determine whitch lines ....... i let you guess .
I have seen lots of faulty devices with a -3 degrees. they cant update to base on this calibration if others devices with 4-5 degrees or 1 degree will be affected by the patch. and they surely dont want to affect correct devices .
did u get a service unit or retail? what week and factory?