I've tried download manager but download stops after 1 hours.I've downloaded the firmware file from here http://www.btusers.com.ar/nan/nokia/...sid=1090319976
Then reflashed in Ubuntu.But after reflashing have some issues
1.Not able to install the apps which were previously installed before reflashing.
2.MicroB maximum times shows network error
3.App manager shows repos update error

I'll try to reflash eMMC soon