Not questioning your business practices. As for anyone buying something incompatible, every person has to buy whatever they want, regardless if it will work or not.
I'm asking more about if you're selling the version that IS US-carrier incompatible, and then (according to you) it is made compatible with a ROM upgrade, will you provide the ability to download the new ROM and instructions on how to flash it?
Also, are you stating that the US-compatibility can be achieved by using an updated ROM?
One question regarding the maximal size of the MicroSD card:
Huawei states that the Mate 7 supports up to 32 GB cards. Could you please test a 64 GB (or bigger) MicroSDXC card? I just can not believe that 32 GB is the max. possible storage expansion for such a great device...