[holgrich]

Today my KeyOne just switch off while lying on my desk. Now, it doesn't react to any button press when not connected to charging cable. As soon as I connect it to charger, the led starts to flash green (greenish-yellow) and I can switch it on. After it shows the Blackberry logo, it goes off again. I can access recovery mode (is that the right term when I press Power + Vol down), but none of the four options helps.
Any idea what happend here and how to fix (except bringing back to the store)? The device is about 9 month old and didn't show this behaviour before.

[Bla1ze]

No idea why it would happen, but you can try reinstalling your OS with the KEYone Upgrade tool found here - https://forums.crackberry.com/blackb...-tool-1117513/

[tprime]

This worked for me. I was stuck in boot loop BB CS said send device to be flashed. In 15 minutes I was saved. THANKS CB commuhity

[holgrich]

Seems like my battery was brocken after about 18 months. Received an exchange device from Vodafone