i know this forum is for discussing phones made by hmd, not phones made by previous owners of the nokia brand, however, please consider (and make sure that nokia themselves know) that microsoft's support arrangements via b2x for all older nokia handsets are abysmal. if you search for "nokia b2x" you will get the ms forums, and hundreds of posts of people complaining about the customer service from b2x.
this is very bad for the nokia brand, because the average consumer won't know what's been happening with the rights to the nokia name, they will just think nokia = bad customer service.
i suggest that nokia take measures to protect the brand and force microsoft to improve the customer service for older nokia phones.
best of luck with the resurrection :)