RM500Q-AE stuck in fastboot

IoT Modules 5G Module
1

I have a RM500Q-AE that is new, but only boots to fastboot mode. Need firmware to update it. Details below:

FCC ID:XMR2020RM500QAE
SN:MPY23BE3A000386
MEI:867197051095434

2

I have sent the latest firmware to your email,pls check