More info on this patch and to download: http://www.worshiptutorials.com/product/blackface-15-line-6-pod-hd500x-patch/
NOTE: If this patch overloads the DSP on your POD, read below...
I've noticed a few people mentioning that this patch overloads the DSP on their HD500x's. I've figured out what the issue is. Nick and I (Brian) both use this patch on our PODs, and we are both running the 1.0 firmware version of the flash memory. When I updated to the latest (1.32) version, the patch overloaded the DSP. I downgraded back to 1.0 and everything worked fine.
So if you'd like to use the patch, there are a couple options you could do. First, you could remove one of the effects from the patch. Personally, I'd probably recommend removing the boost comp, as it's the effect I would imagine most people would use the least. The other option would be to downgrade your POD to the 1.0 firmware of the flash memory. Our PODs have been functioning perfectly on the 1.0 firmware.
This is unfortunate. I'm guessing that Line 6 is using some of the processing power to do some other behind the scenes processing with the latest firmware, which leaves less DSP available for making patches.