EM7455 PID of 9070


I have a an EM7455 which is booting up with a PID of 9070. I believe this means the modem is in boot and hold mode.
What would cause the modem to enter this state?
How could it be recovered?



What is the firmware version? You can read it from ATI3 command.

Are you doing anything with WDisable or PowerOff pins?

Hi @adrianp,

Can you help me answer some questions?
1, Is your device attached to Linux or Windows operating system?
2, Why do you know that your module is in boot and hold mode? How do you realize this?

3, Before this issue happens, what did you take action on your module?


I don’t currently have access to the unit so unable to confirm the firmware version.
A site installed around the same time is running

We set the WDisable and PowerOff pins when the host boots to enable full operation.

  1. Linux ARM host
  2. I don’t know for sure. I read PID 9070 means Boot n Hold Mode.
  3. The unit has been in this state for some weeks so don’t have any record of what happened prior.


You can try to reflash the image.

Hi @adrianp,

Did it work before on your PC (or laptop) you are using?
a, If yes, you can re-install the firmware for your module. You can get the latest FW at this link: https://source.sierrawireless.com/resources/airprime/minicard/74xx/airprime-em_mc74xx-approved-fw-packages/#sthash.bD47fhar.dpbs
b, If no, please provide me your PC’s information.


The module was working .
It is in a Linux ARM appliance not a PC
I’ll see if I can reflash it remotely.

Thanks Adrian