To Kasher the Sonim XP5 Verizon ONLY, you need to flash the system image. This is a different process than just removing the browser app. It will fully rewrite the OS of the phone with a new kosher, browserless operating system. Since this is a process
Here are the steps:
1) First you need to Enable USB debugging:
Dial ##2387##
then go to developers options, find USB debugging, and turn it ON
2) Once you have control over the device from adb, use the command:
adb reboot bootloader
which will restart the device. You should see the bootloader menu appear after a few minutes.
3) Now your device is ready, you just need to get the image files. Download the files [Login to see the link] , and extract them all to the platform-tools folder. (root directory, no subfolders)
4) Once its all copied you can run these commands:
adb reboot bootloader
fastboot flash boot
fastboot reboot-bootloader
fastboot format system
fastboot flash recovery
fastboot flash system
fastboot flash splash
fastboot reboot
after a few minutes your phone should boot up, with your new, kosher operating system. Thanks [Login to see the link] for writing this.