EA6700 刷ATT奇怪的问题
本帖最后由 smallfish001 于 2017-8-23 11:27 编辑前两天按照教程刷了EA6700-AT-ARM-3.4-140-AIO-64K.trx这个固件，ATT官方的，设置了宽带和无线，使用正常，
因为CPU温度偏高，到75了，网上买了个小涡轮风扇，昨天拆机加好了，但是启动以后搜不到无线信号了，进入TT一看，只认出来5G网卡，2.4G的丢了
开始各种怀疑，焊风扇的时候把4331搞挂了？不对啊，电源口离4331那么远不应该啊，然后TT里清除NVRAM，重启后找到2.4G了，这是什么鬼？
再恢复设置（TT的设置备份过），重启后又找不到2.4G了，晕了，看TT里有个恢复出厂设置（清除NVRAM上面的选项），恢复了一下，起来后，有线能获得IP，但是网页访问不了，也PING不通，砖了？没办法，捅RESET试试，没用，断电后重启，恢复到官方固件了（应该是我当时刷的时候只刷了一遍，另一个还是官方固件），又重刷TT，再重新手动配置好。断电后，恢复路由盖子，
再通电，进入TT，还是只认出来5G网卡，再清除NVRAM，重新配置，恢复正常。
现在想来，TT配置好后就不能断电，只要断电就找不到2.4G网卡，像是NVRAM丢失，何解？硬件故障？有用这个固件的吗？
昨天晚上搞到1点多，等今天回家再换固件试试，还是怀疑固件问题，或者无线设置的BUG
折腾吧666666 luckwfi 发表于 2017-8-23 11:52
折腾吧666666
:(不帮忙分析问题，还偷着乐 这个问题在英文论坛上早就被讨论过了。Linksys EA6700/6900有个32k nvram的大bug，当配置文件大小超过32k后，重启时配置文件会随机丢失。最终解决方案刷CFE(相当于电脑主板的BIOS)。以下英文贴有详细介绍。
http://www.linksysinfo.org/index.php?threads/linksys-e2500-upgrading-to-ea6700-with-re6400-range-extender-on-tomato.73655/ 32K NVRAM bug ,有个教程可以刷CFE解决，我已经搞定了 看这里：http://koolshare.cn/thread-4841-1-1.html 我EA6500V2刷死了，改了SPI，CFE进去是命令行模式，这个怎么刷机呀，还 是说EA6500不支持SPI进CFE或mini系统
CFE> help
Available commands:
et Broadcom Ethernet utility.
devinfo devinfo utility.
nvram NVRAM utility.
reboot Reboot.
mfg Manufacture test
set console Change the active console device
loop Loop a command
flash Update a flash memory device
memtest Test memory.
f Fill contents of memory.
e Modify contents of memory.
d Dump memory.
u Disassemble instructions.
batch Load a batch file into memory and execute it
go Verify and boot OS image.
boot Load an executable file into memory and execute it
load Load an executable file into memory without executing it
save Save a region of memory to a remote file via TFTP
ping Ping a remote IP host.
arp Display or modify the ARP Table
ifconfig Configure the Ethernet interface
show clocks Show current values of the clocks.
show heap Display information about CFE's heap
show memory Display the system physical memory map.
show devices Display information about the installed devices.
unsetenv Delete an environment variable.
printenv Display the environment variables
setenv Set an environment variable.
help Obtain help for CFE commands
For more information about a command, enter 'help command-name'
*** command status = 0
CFE> show devices
Device Name Description
----------------------------------------------------------------------------
uart0 NS16550 UART at 0x18000300
uart1 NS16550 UART at 0x18000400
*** command status = 0
CFE> printenv
Variable Name Value
-------------------- --------------------------------------------------
BOOT_CONSOLE uart0
CFE_VERSION 1.0.37
CFE_BOARDNAME BCM947XX
CFE_MEMORYSIZE 262144
STARTUP go;
*** command status = 0
CFE> nvram show
pmon_ver=CFE 6.39.163.39 (r394801)
nvram_space=65536
sdram_config=0x0000
sdram_refresh=0x8040
sdram_ncdl=0x00000000
sdram_init=0x0419
size: 154 bytes (65382 left)
*** command status = 0
CFE> flash
flash filename
Copies data from a source file name or device to a flash memory device.
The source device can be a disk file (FAT filesystem), a remote file
(TFTP) or a flash device.The destination device may be a flash or eeprom.
If the destination device is your boot flash (usually flash0), the flash
command will restart the firmware after the flash update is complete
-noerase Don't erase flash before writing
-offset=* Begin programming at this offset in the flash device
-size=* Size of source device when programming from flash to flash
-noheader Override header verification, flash binary without checking
-forceflashDangerous Command, Don't use if you don't know what you do
-erase Erase the partition, can set theoffset and length
-mem Use memory as source instead of a device
*** command status = -2
CFE> flash -noerase -noheader 192.168.1.2:128.bin flash1.trx
flash1.trx: Device not found
*** command status = -6
CFE>
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