If you are among those people whose Lumia 520, 521. 525 and 526 smartphones have been waiting for the Windows 10 preview and you have been double checking yourself if you should or not after you heard that rolling back is causing bricks. Due to all these problems that were occurring, Microsoft pulled the Technical Preview until they can find the solution.
And a few days back Microsoft did manage to resolve the issue as according to them the issue was in the Windows Phone Recovery Tool. And now, Windows Insider head Gabriel Aul tweeted:
“Yes we believe this is solved now with a change to WPRT and will offer again for 520s soon (likely late in the day tomorrow”
So if you wanna give it a try you can download it again on Tuesday, April 21 and try the build or you can just wait for the new build altogether.