Was this from upgrading to 11.1.2.4?
This is something that I just ran into last week as well. I ran across PSN005786u for 11.1.0.2 that was talking about a bad firmware file, and sounded like what was going on with mine after upgrading to 11.1.2.4. I tried replacing the firmware file, but it didn't fix the issue. The modules were still stuck in the reboot loop. Tried rolling back software, and all the other modules downgraded fine, but the DS30B's were stuck in the boot loop.
Spent 5 hours on the phone with Avaya, and they weren't able to fix them, and shipped me 5 replacement DS30B modules. Funny thing was, when I got the modules, I hooked one up and it did the same thing
I actually just got off the phone with Avaya about an hour ago though, and were able to get the issue resolved. The 11.1.2.4 bug is the same as the one in the PSN for 11.1.0.2. And it seems to only affect the DS30B module. The DS30B2 and DS30 V2 modules were fine. And, here's what was done to fix it.
1. Replace the dsaupnV1.bin file that's in the Primary folder with the same file from 11.1.2.3. After doing that, I power cycled our IP500 and the Digital Module
2. With the DS30B still plugged into the IP500, attached to the DTE port on the DS30B and used Putty to get into it.
3. Powered off the DS30B, held ESC and plugged the power cable back in.
3. Once the Terminal stopped scrolling stuff, hit enter and "->" comes up.
4. Type in AT-X
5. It will come up with a bunch of lines saying "About to send ACK = "
6. After about 10 minutes it came back to "TFTP Load complete"
7. Checked System Status and the module was now connected solid, and reported 11.1.2.3 firmware
I'm not entirely certain if you'd do the exact same steps with you using SE, as I'm not sure if the IP500 gives it it's files or the SE does. I'm not as familiar with SE. But, maybe someone else can let you know if the same steps would work in your exact situation