[rahul varma1]

i started my upating process
it started updating
then instalation also completed
phone restarted
then spinning gears appeared 1st cycle completed
when 2nd cycle started my stopped stopped
when i switched on my mobile again again gears are appearing and after my mobile is switched off
unable to reboot also
phone is not working and unable to do reboot

[realwarder]

It takes a while.. be patient. If an issue occurs use the Lumia Recovery Tool to go back to 8.1 and run the upgrade again.

[rahul varma1]

without ending the updating process my phone switched in middle
if again i turn on. appearing spinning gears and getting switched off
so there is no chance for me to reboot my device

[RumoredNow]

If it powers down and you power it up... That is a reboot.

Try a Hard Reset.

From power off > hold Volume down > plug in AC ( you don't want the battery to die during flashing) and that will cause boot > when you see the exclamation screen (!) immediately let go of Volume Down > tap Volume Up / Volume Down / Power / Volume Down

If it does not flash and shuts down again... You will have to go to the recovery tool.

[rahul varma1]

exclamation screen is not appearing when i hold volume down key and plugin my mobile
are there any other ways to make my phone work

[RumoredNow]

You have to use Windows Phone Recovery Tool and revert to 8.1.

If you need to add additional information or want to post additional questions, please join the site so you can see the reply button and continue the conversation in the same thread you originally made.

[rahul varma1]

should i download windows phone recovery tool in pc
in which site should i logged in

[RumoredNow]

should i download windows phone recovery tool in pc
in which site should i logged in

Yes, download to your PC.... Use the first link. WPRT. The second tool (Lumia Software Recovery Tool) is deprecated and the WPRT is made specifically to help revert from 10.