BTW, if you're interested in doing big upgrade, better choose kp52 - it's release-ready, and it would be in repos for some time, if not for migration fiasco and repos being disabled. Also, newest usbmode versions require kp52.

I'm also quite sure, that official repos are working for last few days - it's just that they were extremely slow. Now, if nothing changed for last 24h, they're fast, but many packages give hash sum errors. I.E, everything is as usual

/Estel