Firmware upgrade exceeds file size limit. MAX BR1 MK2

Was given new firmware for MAX BR1 MK2 version 8.1.3 build 5250 to install. Previous firmware 8.1.3 build 5030. When manually loading new file, errors out " File size exceed allowed limit" What am I missing? tried reboot to free up temp memory, still no luck

You should pose this question to the person(s) who provided that firmware.

If it was a special firmware provided by support - you should engage with support regarding this question.

I do have a ticket opened with Mobile Must Have, but wanted to see if forum had an answer.