[LeEco Le 2 ROMs, Kernels, Recoveries, & Other Deve] DengMingjun:
I use ZIPME to great a update.zip to install busybox , it can work and wlan hotspot can also work normally, mabe you can integrate into your ROM ,the following is the symlink:

symlink("/system/xbin/busybox", "/system/xbin/[", "/system/xbin/[[", "/system/xbin/acpid", "/system/xbin/adjtimex", "/system/xbin/arp", "/system/xbin/arping", "/system/xbin/ash", "/system/xbin/awk", "/system/xbin/base64", "/system/xbin/basename", "/system/xbin/beep", "/system/xbin/blkdiscard", "/system/xbin/blkid", "/system/xbin/blockdev", "/system/xbin/brctl", "/system/xbin/bunzip2", "/system/xbin/bzcat", "/system/xbin/bzip2", "/system/xbin/cal", "/system/xbin/cat", "/system/xbin/catv", "/system/xbin/chat", "/system/xbin/chattr", "/system/xbin/chgrp", "/system/xbin/chmod", "/system/xbin/chown", "/system/xbin/chpst", "/system/xbin/chroot", "/system/xbin/chrt", "/system/xbin/chvt", "/system/xbin/cksum", "/system/xbin/clear", "/system/xbin/cmp", "/system/xbin/comm", "/system/xbin/conspy", "/system/xbin/cp", "/system/xbin/cpio", "/system/xbin/crond", "/system/xbin/crontab", "/system/xbin/cttyhack", "/system/xbin/cut", "/system/xbin/date", "/system/xbin/dc", "/system/xbin/dd", "/system/xbin/deallocvt", "/system/xbin/devmem", "/system/xbin/df", "/system/xbin/dhcprelay", "/system/xbin/diff", "/system/xbin/dirname", "/system/xbin/dmesg", "/system/xbin/dnsd", "/system/xbin/dnsdomainname", "/system/xbin/dos2unix", "/system/xbin/du", "/system/xbin/dumpkmap", "/system/xbin/dumpleases", "/system/xbin/echo", "/system/xbin/ed", "/system/xbin/egrep", "/system/xbin/eject", "/system/xbin/env", "/system/xbin/envdir", "/system/xbin/envuidgid", "/system/xbin/ether-wake", "/system/xbin/expand", "/system/xbin/expr", "/system/xbin/fakeidentd", "/system/xbin/false", "/system/xbin/fatattr", "/system/xbin/fbset", "/system/xbin/fbsplash", "/system/xbin/fdflush", "/system/xbin/fdformat", "/system/xbin/fdisk", "/system/xbin/fgconsole", "/system/xbin/fgrep", "/system/xbin/find", "/system/xbin/findfs", "/system/xbin/flock", "/system/xbin/fold", "/system/xbin/free", "/system/xbin/freeramdisk", "/system/xbin/fsck", "/system/xbin/fsck.minix", "/system/xbin/fstrim", "/system/xbin/fsync", "/system/xbin/ftpd", "/system/xbin/ftpget", "/system/xbin/ftpput", "/system/xbin/fuser", "/system/xbin/getopt", "/system/xbin/grep", "/system/xbin/groups", "/system/xbin/gunzip", "/system/xbin/gzip", "/system/xbin/hd", "/system/xbin/hdparm", "/system/xbin/head", "/system/xbin/hexdump", "/system/xbin/hostid", "/system/xbin/hostname", "/system/xbin/httpd", "/system/xbin/hush", "/system/xbin/hwclock", "/system/xbin/i2cdetect", "/system/xbin/i2cdump", "/system/xbin/i2cget", "/system/xbin/i2cset", "/system/xbin/id", "/system/xbin/ifconfig", "/system/xbin/ifdown", "/system/xbin/ifenslave", "/system/xbin/ifplugd", "/system/xbin/ifup", "/system/xbin/inetd", "/system/xbin/init", "/system/xbin/install", "/system/xbin/ionice", "/system/xbin/iostat", "/system/xbin/ip", "/system/xbin/ipaddr", "/system/xbin/ipcalc", "/system/xbin/ipcrm", "/system/xbin/ipcs", "/system/xbin/iplink", "/system/xbin/ipneigh", "/system/xbin/iproute", "/system/xbin/iprule", "/system/xbin/iptunnel", "/system/xbin/kbd_mode", "/system/bin/kill", "/system/bin/killall", "/system/bin/killall5", "/system/xbin/klogd", "/system/xbin/last", "/system/xbin/less", "/system/xbin/linux32", "/system/xbin/linux64", "/system/xbin/linuxrc", "/system/xbin/ln", "/system/xbin/loadfont", "/system/xbin/loadkmap", "/system/xbin/logger", "/system/xbin/logname", "/system/xbin/logread", "/system/xbin/losetup", "/system/xbin/ls", "/system/xbin/lsattr", "/system/xbin/lsof", "/system/xbin/lspci", "/system/xbin/lsusb", "/system/xbin/lzcat", "/system/xbin/lzop", "/system/xbin/lzopcat", "/system/xbin/makedevs", "/system/xbin/man", "/system/xbin/md5sum", "/system/xbin/mdev", "/system/xbin/mesg", "/system/xbin/microcom", "/system/xbin/mkdir", "/system/xbin/mkdosfs", "/system/xbin/mke2fs", "/system/xbin/mkfifo", "/system/xbin/mkfs.ext2", "/system/xbin/mkfs.minix", "/system/xbin/mkfs.vfat", "/system/xbin/mknod", "/system/xbin/mkpasswd", "/system/xbin/mkswap", "/system/xbin/mktemp", "/system/xbin/modinfo", "/system/xbin/more", "/system/xbin/mount", "/system/xbin/mountpoint", "/system/xbin/mpstat", "/system/xbin/mt", "/system/xbin/mv", "/system/xbin/nameif", "/system/xbin/nanddump", "/system/xbin/nandwrite", "/system/xbin/nbd-client", "/system/xbin/nc", "/system/xbin/netstat", "/system/xbin/nice", "/system/xbin/nmeter", "/system/xbin/nohup", "/system/xbin/nsenter", "/system/xbin/nslookup", "/system/xbin/ntpd", "/system/xbin/od", "/system/xbin/openvt", "/system/xbin/patch", "/system/xbin/pgrep", "/system/xbin/pidof", "/system/xbin/ping", "/system/xbin/ping6", "/system/xbin/pipe_progress", "/system/xbin/pivot_root", "/system/xbin/pkill", "/system/xbin/pmap", "/system/xbin/poweroff", "/system/xbin/powertop", "/system/xbin/printenv", "/system/xbin/printf", "/system/xbin/ps", "/system/xbin/pscan", "/system/xbin/pstree", "/system/xbin/pwd", "/system/xbin/pwdx", "/system/xbin/raidautorun", "/system/xbin/rdate", "/system/xbin/rdev", "/system/xbin/readahead", "/system/xbin/readlink", "/system/xbin/readprofile", "/system/xbin/realpath", "/system/xbin/reboot", "/system/xbin/renice", "/system/xbin/reset", "/system/xbin/resize", "/system/xbin/rev", "/system/xbin/rm", "/system/xbin/rmdir", "/system/xbin/route", "/system/xbin/rpm", "/system/xbin/rpm2cpio", "/system/xbin/rtcwake", "/system/xbin/run-parts", "/system/xbin/runlevel", "/system/xbin/runsv", "/system/xbin/runsvdir", "/system/xbin/rx", "/system/xbin/script", "/system/xbin/scriptreplay", "/system/xbin/sed", "/system/xbin/seq", "/system/xbin/setarch", "/system/xbin/setconsole", "/system/xbin/setfont", "/system/xbin/setkeycodes", "/system/xbin/setlogcons", "/system/xbin/setserial", "/system/xbin/setsid", "/system/xbin/setuidgid", "/system/xbin/sh", "/system/xbin/sha1sum", "/system/xbin/sha256sum", "/system/xbin/sha3sum", "/system/xbin/sha512sum", "/system/xbin/showkey", "/system/xbin/shuf", "/system/xbin/slattach", "/system/xbin/sleep", "/system/xbin/smemcap", "/system/xbin/softlimit", "/system/xbin/sort", "/system/xbin/split", "/system/xbin/start-stop-daemon", "/system/xbin/stat", "/system/xbin/strings", "/system/xbin/stty", "/system/xbin/sum", "/system/xbin/sv", "/system/xbin/svc", "/system/xbin/svlogd", "/system/xbin/swapoff", "/system/xbin/swapon", "/system/xbin/switch_root", "/system/xbin/sysctl", "/system/xbin/syslogd", "/system/xbin/tac", "/system/xbin/tail", "/system/xbin/tar", "/system/xbin/tcpsvd", "/system/xbin/tee", "/system/xbin/telnet", "/system/xbin/telnetd", "/system/xbin/test", "/system/xbin/tftp", "/system/xbin/tftpd", "/system/xbin/time", "/system/xbin/timeout", "/system/xbin/top", "/system/xbin/touch", "/system/xbin/tr", "/system/xbin/traceroute", "/system/xbin/traceroute6", "/system/xbin/true", "/system/xbin/truncate", "/system/xbin/tty", "/system/xbin/ttysize", "/system/xbin/tunctl", "/system/xbin/ubiattach", "/system/xbin/ubidetach", "/system/xbin/ubimkvol", "/system/xbin/ubirename", "/system/xbin/ubirmvol", "/system/xbin/ubirsvol", "/system/xbin/ubiupdatevol", "/system/xbin/udhcpc", "/system/xbin/udhcpd", "/system/xbin/udpsvd", "/system/xbin/uevent", "/system/xbin/umount", "/system/xbin/uname", "/system/xbin/unexpand", "/system/xbin/uniq", "/system/xbin/unix2dos", "/system/xbin/unlink", "/system/xbin/unlzop", "/system/xbin/unshare", "/system/xbin/unxz", "/system/xbin/unzip", "/system/xbin/uptime", "/system/xbin/users", "/system/xbin/usleep", "/system/xbin/uudecode", "/system/xbin/uuencode", "/system/xbin/vconfig", "/system/xbin/vi", "/system/xbin/volname", "/system/xbin/wall", "/system/xbin/watch", "/system/xbin/watchdog", "/system/xbin/wc", "/system/xbin/wget", "/system/xbin/which", "/system/xbin/who", "/system/xbin/whoami", "/system/xbin/whois", "/system/xbin/xargs", "/system/xbin/xz", "/system/xbin/xzcat", "/system/xbin/yes", "/system/xbin/zcat", "/system/xbin/zcip");