How can I repair my Nokia 520 that is stuck in a bootloop?

[Windows Central Question]

nokia 520 bootloop

Error: Unable to find bootable option. Press any key to shut down.
wha about thi message??
and how to repair??
please help meeee... T.T

 

[RumoredNow]

Re: nokia 520 bootloop

Download the second tool from here: FAQ - How can I recover/reset/restore my phone software? - Microsoft - USA the Lumia Software Recovery Tool.

Use the option for "my phone will not boot or respond" and the tool will flash the last official OS and firmware to your 520.