Firmware for RM530N-GL?

Where can I download the latest firmware for RM530N-GL?

According to this thread:

It says to contact my provider (Google Fi / T-Mobile), which I did, and they said I must contact the product manufacturer to get the latest firmware.

Thank you.

What is the current firmware version. is it RM530NGLAAR05A01M4G_01.200.01.200?

No, the current revision is: RM530NGLAAR03A02M4G