Bluetooth Greyed Out (Connection not allowed) on Rooted LG G3 with Android 4.4.2

[Android Central Question]

I was 'experimenting' with my rooted LG G3 running android 4.4.2 and I accidentally managed to make my Bluetooth a ‘system app’ (and hence unusable, greyed out) while using 'ROM Toolbox' App.

I then converted it back to a user app using Titanium Backup Pro, but it still remained greyed out. I then tried using ADB to turn it back on using the following from another post;

adb shell service call bluetooth_manager 6' (I've tried a few numeric variables but none seem to work),

then I tried;

‘adb shell’
‘su’
‘am start -a android.bluetooth.adapter.action.REQUEST_ENABLE’

That didn't work either as I got this error 'app_process has text relocations, this is wasting memory' etc......I think this is because I have Xposed Framework installed also.

Next I tried sQlite,

‘sQlite3 settings.db’
‘update global set value=1 where name='bluetooth_on';’

Then I got the error..... ‘no such table: global’

I'm not a developer but I do enjoy messing around with these things, until it all goes wrong of course......I know I could un-root and see what happens, but I'd rather try and figure this out rather than go through the hassle of un-rooting & rooting again...Anyone have any ideas how to turn my Bluetooth back on, (preferably with an ADB Command)? Thanks......

 

[Rukbat]

‘sQlite3 settings.db’
‘update global set value=1 where name='bluetooth_on';’

Then I got the error..... ‘no such table: global’

I don't know if there's a field named 'bluetooth_on' in the table you have to access (you'll have to look at the field names), but the proper SQL query would be

‘sQlite3 settings.db’
‘update <name of the table here> set value=1 where "bluetooth_on" = 0';’

You can't use single quotes inside single quotes (or double quotes inside double quotes), if you're in one kind, you have to indicate a string using the other kind.

Whether doing that will solve your problem is also something you'll have to find out. You may find that not even unrooting will fix it, you may have to flash the stock ROM, then root, then leave the Bluetooth app alone. (And if you have a lot of things on the phone, you might want to install TWRP first, to back up all your data (installed apps,m files, etc.) (The link is to TWRP's LG page and the G#s are right at the top.)

 

[riverbird]

Thanks Rukbat.....will try the way you suggested and see what happens!