Is it necessary to update Lumia 520 to WP8.1?

[Alexwinphone]

Hello!!, well i have a lumia 520 with Windows Phone 8 on it. The thing is that I've read a lot about all the problems that the 8.1 causes on some phones (that the WiFi, SD card,or WiFi hub etc. doesn't work properly, or don't work at all after the update). And I don't mention the constant resume screen or the "auto reset" of some phones with the 8.1. Well my question is : it's necessary to update my phone?

 

[Amit Mishra3]

No not necessary to update if ur willing to sacrifice some new features... Fyi I got Lumia 620..n never heard or experienced problems u have mentioned.. N my phone is up to date(with developer preview)

 

[RumoredNow]

Are we speaking about Official 8.1 + Cyan or devices on un-optimized Preview for Developers update track?