Infinite rotating gears

[harshdeep gupta]

I try to update my lumia 520 to Win 10 but because of endless rotating gears i have to roll back to 8.1 using NSU...Now i am thinking to once again update to w10m so is there any precaution should i take so as to escape from that endless loop..Pls suggest..And also why this is happening if anybody knows about it??

 

[Amit Mishra3]

Remove memory card n there should be at least 1.5 gb empty space in phone memory then try... Don't touch it till its done... For some ppl it took 4-6 hours...

 

[harshdeep gupta]

Remove memory card n there should be at least 1.5 gb empty space in phone memory then try... Don't touch it till its done... For some ppl it took 4-6 hours...

Thank u very much