Request for latest firmware and flashing tools for RM500U-EA

IoT Modules 5G Module
1

Dear Quectel Support,

I have a Quectel RM500U-EA module (version RM500UEAAA-D10-SNADA) installed on my Debian 12 system.
I would like to request the latest firmware (RM500UEAAAR03A06M2G_01.001.01.001) and the proper tools to reflash it.

Could you please send the firmware and flashing tool to my registered email address?

Thank you in advance for your support.

2

I have sent you the latest firmware version and the upgrade tool. Please check it.

3

Thank you for the files.
After flashing the .pac version, my RM500U-EA no longer registers on LTE/5G and shows “sprd” as firmware.
Could you please confirm if I should use the Qualcomm QFIL version (RM500UEAAAR03A06M2G_01.001.01.001_FULL) instead?

4

Dear @Deposito
RM500U is Unisoc platform. It can’t use QFIL. How did you flash the firmware?
Please check AT+CFUN?

5

Dear Quectel Support,

I am using the RM500U-EA module on lightweight ARM-based systems running Linux (for example, Debian 12 / Kali).
Currently, the module only exposes serial (ttyUSB) interfaces and does not create /dev/cdc-wdm0 even after switching usbnet modes.

Could you please provide the latest firmware that enables MBIM or QMI functionality on ARM platforms (not only x86_64)?
I would like to use the module with single-board computers and embedded Linux environments.

Thank you for your support.

6

Dear @Deposito
RM500U doesn’t support MBIM.
QMI is Qualcomm, but RM500U is Unisoc platform.
So RM500U doesn’t support these feature.

7

Dear Silvia,

Thank you for clarifying that the RM500U-EA is based on the Unisoc platform.

The module is working properly; however, it currently relies on 4G as the primary link,
while 5G is active only in NSA mode. The 4G speed is very slow even though the signal is strong (RSRP = –74 dBm).

Below are the network readings:

+QENG: “LTE”,“FDD”,420,01,358C82F,429,1450,3,5,5,1B9E,-74,-10,-45,8,0,0,46
+QENG: “NR5G-NSA”,4

Could you please help me configure the module so that 5G (NR) becomes the primary connection
instead of 4G?

8

Dear @Deposito
Sorry, module can’t do this, you can check with your operator and see whether they configure 5G as primary.
Actually, NSA is based 4G,