求助：JTAG使用过程中出现的一些奇怪问题

freem***

最近在用JTAG刷机，但是使用过程中发现一些问题，比如用wrt54g -erase:cfe /fc:51来删除CEF空间，回车后只要1秒就执行完毕，但是再用wrt54g -backup:cfe /fc:51就发现有些地方删除了，但是有些固定的区域没办法删除，不知道各位是否出现同样的情况？而且在用wrt54g -flash:cfe /fc:51重写CEF的时候，如果CEF.BIN文件中有成片的FFFFFFFF数据的话，就直接跳过，不写到FALSH中去，这样再用wrt54g -backup:cfe /fc:51读回出来比较就会发现跟CEF.BIN是不一样的

freem***

====================================
WRT54G/GS EJTAG Debrick Utility v4.5
====================================

Probing bus ... Done

Instruction Length set to 8

CPU Chip ID: 00010100011100010010000101111111 (1471217F)
*** Found a Broadcom BCM4712 Rev 1 CPU chip ***

    - EJTAG IMPCODE ....... : 00000000100000000000100100000100 (00800904)
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done

Manual Flash Selection ... Done

Flash Vendor ID: 00000000000000000000000010111111 (000000BF)
Flash Device ID: 00000000000000000010001101101011 (0000236B)
*** Manually Selected a SST39VF6401 4Mx16 BotB     (8MB) Flash Chip ***

    - Flash Chip Window Start .... : 1fc00000
    - Flash Chip Window Length ... : 00400000
    - Selected Area Start ........ : 1fc00000
    - Selected Area Length ....... : 00040000

*** You Selected to Erase the CFE.BIN ***

=========================
Erasing Routine Started
=========================
Total Blocks to Erase: 8

Erasing block: 1 (addr = 1fc00000)...Done

Erasing block: 2 (addr = 1fc08000)...Done

Erasing block: 3 (addr = 1fc10000)...Done

Erasing block: 4 (addr = 1fc18000)...Done

Erasing block: 5 (addr = 1fc20000)...Done

Erasing block: 6 (addr = 1fc28000)...Done

Erasing block: 7 (addr = 1fc30000)...Done

Erasing block: 8 (addr = 1fc38000)...Done

=========================
Erasing Routine Complete
=========================
elapsed time: 0 seconds


*** REQUESTED OPERATION IS COMPLETE ***

freem***

难道要编程器才能解决？