M35 Firmware Upgrade and USSD issue

IoT Modules GSM Module
1

Hi,

I have a couple M35 modules inside a unit. They are on different revisions. When I try to execute a USSD command on modules with the revision: M35AR01A30 it works fine, but whenever I do the same command on: M35AR01A36 it gives me the following error:
+CUSD: 4

+CME ERROR: 100

I’ve tried all possible ways to send the USSD command but all give this error. So I assume its a bug in the M35AR01A36 revision. Is there some way to downgrade these to M35AR01A30?

Thanks in advance!

2

yes, you can downgrade the firmware to M35AR01A30 via QFlash tool. You can email to support@quectel.com to get the firmware package and QFlash tool. Thanks!

3

i send mail dungrazer@gmail.com
check for me
thank

4

Dear Quectel support team,

Could you kindly send me the latest firmware for M35, what we need is M35AR01A36
My email address is valek19451812@gmail.com

Thanks in advance.