wep_key0=33643039323434356239
no quotes around it (changes the meaning from string "key0" to hex key0)
then try running the commands again
- wpa_supplicant -B -Dnl80211 -iwlan0 -c/etc/wpa_supplicant/wpa_supplicant.conf
- busybox udhcpc -i wlan0
- ifconfig