[fedora-arm] Can I update Uboot painlessly

[mo.ucina]

Hello Guys,

A quick question from me , can I update my fc21 installation on a 
banana-pi , to use the latest uboot ? I have a fc21 production server 
based on banana-pi , and was wandering is there an update path/method to 
get the latest and greatest uboot into my machine without any pain . The 
server runs 24/7 but could tolerate a little down time .

Best Regards
Milorad