我手上现有几个dsPIC30F系列芯片，ICD2连接时不能读出芯片ID，ICD2可以烧PIC16F57,但是不能烧dsPIC30F4011.真搞不清楚是谁的问题？
芯片和ICD2都是多网上买的，现不知是谁的问题，请高手帮忙判断一下,谢谢！

Connecting to MPLAB ICD 2
ICDWarn0059: About to re-program ICD2 USB Boot firmware code. Please do NOT disconnect the ICD2 or interrupt this operation!
...Connected
Setting Vdd source to target
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
即使选了芯片也每次都会出现：ICDWarn0059，问了卖主说是正常现象，不影响性能。不知是真是假？上面选好了芯片PIC16F57,可以正常下载。

Connecting to MPLAB ICD 2
ICDWarn0059: About to re-program ICD2 USB Boot firmware code. Please do NOT disconnect the ICD2 or interrupt this operation!
...Connected
Setting Vdd source to target
ICDWarn0020: Invalid target device id (expected=0x101, read=0x0)
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
下面芯片型号为DSPIC30F4011,但是读不出ID，不能下载。连线我查了几遍都是正确的。真郁闷！

哪位能指点一下，谢谢了！