Latest firmware for RM500U-EA

I want the latest firmware for my rm500U-EA where can i get and how to flash it?

I am on RM500UEAAAR03A11M2G_01.001.01.001 this firmware having issues connecting to 5G

can anyone help with the latest firmware

Dear @aditech3081
I have sent to your email, please check.

can you send the detailed process to flash including the flashing software

is it for windows? as i am using windows OS