MC8700 Firmware Module

There are several MC8700 modules, I can not find information about them and update to the latest version.
I understand the modem is old, but it can still serve

Hi Rierkian,

MC8700 is EOL (End of Life). The firmware MC8700 is not available on Please contact your distributor (i.e. from whom you purchased the device) for assistance in this case.

Or you can refer to the below link of Sierra to find the replacement module.