Originally Posted by d2pro

We have received reports that there are some issues with the new v2.1 firmware for people using d2pro with D2C chipsets. We are investigating this and will release a fix soon. In the meantime, please note that d2pros with the green "d2c-2 compliant" sticker on them cannot be downgraded to v1.0 or v1.1b firmware. Therefore, do not use the v2.1 update if you have a standard D2C chipset and a d2c-2 compliant d2pro. If you have already updated, don't worry! The upcoming fix will work for you!