Yes! it's a mobile computer not a phone
On every computer I had, I was able to upgrade the OS for years!

Uh! it maybe a phone, in this case you cannot exepct a lot, on most of my past phones I was not able to upgrade/change the firmware, but in that case it's a poor phone.

Mumble.... it may be that it is not a mobile computer ad not a phone? or the answer changes every time you point at its defects!

Just joking a bit (really I Love this device!)

regards

Niko