4g模块usb不能被7688识别
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重新编译更新了系统，usb module无法识别了
求助这怎么解决
做过的改动：之前板子是32/128的配置，usb识别正常，现在由于7688模组变更，换成32/64的配置，更改系统配置为
重新编译后烧进去就无法识别加载usb模块了 -
检查下以前编译时，usb模块是否是手动选择的？如果是，更换Target后，还需要重新选择一遍。
你也可以用另一种方法，参考 https://widora.io/bit31diff ，直接在现有的dts上修改reg那一行 reg = <0x0 0x4000000>; -
谢谢这位仁兄，发现是更新源码时把以前的option.c冲掉了，需要重新修改驱动源码了
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你好，请问一下大佬，你在编译时候有出息下面的错误吗
make[3]: Leaving directory '/home/ccc/openwrt_widora/package/utils/e2fsprogs'
make[3]: Entering directory '/home/ccc/openwrt_widora/package/utils/usbmode'
Makefile:74: *** Download/default is missing the FILE field.. Stop.
make[3]: Leaving directory '/home/ccc/openwrt_widora/package/utils/usbmode'
package/Makefile:191: recipe for target 'package/utils/usbmode/compile' failed
make[2]: *** [package/utils/usbmode/compile] Error 2
make[2]: Leaving directory '/home/ccc/openwrt_widora'
package/Makefile:188: recipe for target '/home/ccc/openwrt_widora/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.package_compile' failed
make[1]: *** [/home/ccc/openwrt_widora/staging_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/stamp/.package_compile] Error 2
make[1]: Leaving directory '/home/ccc/openwrt_widora'
/home/ccc/openwrt_widora/include/toplevel.mk:181: recipe for target 'world' failed
make: *** [world] Error 2