Upgrade Issue - Error Trying to Remove sangoma-pbx

[mmishra (Mohit Mishra)]

Hello,
Please check this out.

Error: Trying to remove “sangoma-pbx”, which is protected

yum downgrade kmod-via-rhine yum downgrade kmod-via-rhine yum downgrade kmod-via-velocity yum downgrade kmod-via-velocity yum upgrade

Thanks