Why don't I have an [L520] imei after updating to Windows 10?

[Windows Central Question]

[L520] no imei after upadating to windows 10

phone app crashes and no network

 

[RumoredNow]

Re: [L520] no imei after upadating to windows 10

First, try a Factory Rest or Hard Reset... If that fails use Lumia Software Recovery Tool to revert to official.

How can I recover/reset/restore my phone software? - Microsoft - USA

 

[fatclue_98]

Re: [L520] no imei after upadating to windows 10

I learned a long time ago that radio issues are substantially reduced or eliminated by pulling the SIM card before any update or flash.