I was wondering If there was a way of restoring the original firmware that was shipped with the chip (or forcing the upload of new firmware). The current firmware I have on the chip crashes and stops being responsive to ping 5 seconds after startup, so I cant use chip’s FTP server to upload new firmware.
I read somewhere that shorting two pins would force a recovery from the backup image but I dont know what two pins to short.
Have you checked to be sure a reset pin is not tied to ground? Another thing to look for is solder whiskers. When the board is soldered (especially when wave soldered) there can be microscopic shorts can develop.
Are all the unused pins (of the module) left floating and not tied to anything?
Looking at the Hardware Reference guide, be sure to be following the power supply guidelines (and warnings) stated on pages #47 and 48. Improper power supply parameters may cause operational problems. The power supply could be operating at the edge of the specs allowing some, but not all modules to operate properly.
This remainder of this post is really directed towards Erik whom was wanting some information recovering other ME modules. I hope this helps you out.
I have Digi ME 9210 module and the TFTP recovery didnt work. At first I tested successfully the firmware on digi ME 9210 with JTAG. Then I uploaded the firmware and rom image via one FTP transfer in to the digi module and the module seems to be stuch at recovery mode. I have the DHCP and TFTP setup done (I can see the TFTP transfer in wireshrak and in server log). But the module didnt reboot and afret reboot it again searches for new image.