Bluetooth and Wi-Fi are not turning on after software update on lenovo k910

Hello every1, recently i updated my lenovo k910 dual sim from vibe ui 1.5 1416 (stock firmware) to vibe ui 2.0 1503, everything working fine except Wi-Fi and bluetooth can't be turned on, how do i solve this problem, i have search countless time on google but i can't fine any thread or solution regarding this problem, i think this is a sfware problem not hardware as it working fine before, i hope somebody can help regarding on the solution…

Gotta love those 'updates'.

Maybe see if there's a way to roll back the update.

Sometimes you can find where someone has cataloged older versions of software - I've fixed a number of devices simply by getting rid of the 'newest' software/firmware upgrades.

The manufacturer often makes little tweaks to devices over the time they are being made, and they don't always check to see if every version of the hardware will work with each new update.