Latest firmware for RM521F-GL

Can anyone send me a copy of the latest firmware for my RM521F-GL?

I would like to re-flash the firmware to help troubleshoot a technical issue I’m running into with the module, but the supplier I bought it from either doesn’t understand my request or does not have the current firmware.

Thank you.

Dear @nickkrewson
Please contact with your provider firstly next time, they have access to get the latest firmware.
Thanks for your understanding.