![Atop SE5002D-Fm User Manual Download Page 87](http://html1.mh-extra.com/html/atop/se5002d-fm/se5002d-fm_user-manual_3004796087.webp)
Atop Serial Device Server
SE5002D
User Manual V. 1.1
Emergency Firmware Recovery
The AP (application program) firmware for SE5002D can be disabled to restore the device to
the proper firmware in case an incompatible firmware was downloaded and the system crashes
while loading the AP.
To disable the AP firmware and prevent it from executing please do the following.
Power off the device.
While the reset button is pressed, power on the device.
In Device Management Utility, SE5002D will show up with a default kernel firmware and
no AP firmware.
Download the correct AP firmware to SE5002D.
The device will restart and recover to the downloaded firmware.
Fig. 4