Hello Aslam,
You do not specify which BSP you are using, but if version 5.37 is the only one included on your BSP you would need to add the recipe for 5.50 to your build environment. If you have both versions, you can define the preferred version for your builds.
Adding the 5.50 in case it’s not available is easier said than done as you would also need to make sure that dependencies are met.
The Open Embedded layer has the 5.50 version but only in newer branches. You may import the recipe from the closest branch and fix dependencies.
https://github.com/openembedded/openembedded-core/blob/master/meta/recipes-connectivity/bluez5/bluez...
I hope this helps!
Regards,
