Finally the avaited boom J8 update is out, its realy a good news, i found this today while browsing through the Tecno-Spot forum, One of the moderators by name Jenny actually posted it.
Hello, everyone. Nice to meet you, Im Jenny. I am technical moderator.
The package is the latest 721 version, which applies to all versions of Boom J8.
You may also wanna check out the most recent boom J8 updates
Below is the link the latest tecno boom J8 update, download it, instal it on your phone and tell us if it worked or not.
Note: In case the package cannot be installed, you may visit the closest Carlcare service center for help