Transport W21 Novatel E362 modem firmware?

We just update 1 W21 with 8.03 firmware from some version that was back in 2014. Everything appears fine but the cellular radio button is now red. It was not previously. In investigating the Novatel E362 modem firmware its listed as year 2012 with 4.02.xx. What is the correct firmware upgrade and where is it listed under FTP site? Thank you. Dana

It was not previously. In investigating the Novatel E362 modem firmware its listed as year 2012 with 4.02.xx. What is the correct firmware upgrade and where is it listed under FTP site? Thank you. Dana