I bought my first X6 U9000 in mid 2010, the same time 9 workers committed suicide by leaping off of Huawei/Foxconn buildings.
. Huawei/Foxconn washed their hands of support long ago for this model, they literary pulled all software and support off their website early 2011 like the model never existed. The actual unit was discontinued shortly after this the same time that Huawei/Foxconn had a fire and the explosion killed 3 people.
Im guessing motorola bought the leftover components from Foxconn and rebranded from there, same with Sharp and Apanda. The CSL/CherryMobile/WellcoM/Huawei units were manufactured loooong before this.
Your best bet is to contact Sharp or Apanda as they are the GSM.