cy7c68033怎么擦除nx2lp的闪存

我想知道如何擦掉一个坏的固件下载到它？我使用CY368（CY7C68033的EVM）进行测试，显然使用NANDMFG下载了一个Bug固件。现在，我不能再使用NANDFG来编程它了，因为设备不能被NandMfg识别，尽管可以被其他CyPress实用程序识别，比如CySudio。我想知道是否有任何工具来清除闪存芯片？[注：EVM是可以的，因为如果挂上闪存芯片，我仍然可以正常访问它]谢谢。



     以下为原文
  I wonder how to erase a flash with bad firmware downloaded to it?  I am using CY3686 (CY7c68033's EVM) for testing; and obviously downloaded a buggy firmware to it using NandMfg.  Now, I can no longer program it using NandMfg because the device is not recognizable by NandMfg, although can be recognized by the other Cypress utility like CyConsole.  I wonder if there is any tools to erase the flash chip?  [note: the EVM is ok because if I changed the flash chip i can still access it normally]  Thanks in advance.