首先用git把openwrt的attitude_adjustment代码下载回来
git clone git://git.openwrt.org/12.09/openwrt.git
然后编辑文件 openwrt/target/linux/ar71xx/image/Makefile

比如我编译的是740n-v3
搜740n找到如下内存
$(eval $(call SingleProfile,TPLINK,$(fs_64kraw),TLWR740NV3,tl-wr740n-v3,TL-WR741ND,ttyS0,115200,0×07400003,1,4M))
改成
$(eval $(call SingleProfile,TPLINK,$(fs_64kraw),TLWR740NV3,tl-wr740n-v3,TL-WR741ND,ttyS0,115200,0×07400003,1,8M))
然后再编译，就行了
关于如何编译，和如何搭建环境，去openwrt.org里的wiki看吧，写的不错，语言有中文的