引用:
Originally posted by victorkuo
我有一個3.5的外接盒，oxford 911晶片組，被我更新韌體時失敗了，不知道有哪位大大知道方法可以救回來。
送原廠的方法不行，因為我根本不知道是哪一間做的，也可能過保固了。
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全文在這裡...
http://dvdpro.club.st/firmware/Oxford/Readme.PDF
節錄相關說明如下...
Force flash mode
If all else fails, the OXFW900 has a force flash mode to turn off the internal processor and force the device into
programming mode. This mode is entered by temporarily grounding pin 123 while the device is powered. The device
will then BUSY all requests except quadlet writes to offset 0xF0080000, the flash programming port, making the
device appear blank to the programmer. To program in this mode, plug in and power the device, pull pin 123 low, then release it, then program as normal.
The OXFW911 also has a force flash mode that can be used when the device is NOT powered. Short pin 57 of the
OXFW911 to ground and then apply power. Powering up with this pin grounded will cause the device to enter “Force Flash” mode and the flash port will be enabled.
NOTE: Pin 57 should then be open circuit before attempting to program the internal flash. Programming the flash
must then be performed using the FW9 utility as the flash will be completely blank (hence it will not contain the
firmware uploader which is present after manufacturing of the OXFW911 device). See the “FW9” subdirectory of the “OXFW900 Uploader” directory.
以上...