Messed up 303h help for recover

I installed openwrt to my aruba 303h. It works very well. Decided to revery back to stock rom but when I was playing with apboot I messed up. Doesnot work setenv bootcmd "boot" for revert back. I cannot install ArubaInstant_Ursa to aos1. It always return with wrong image size error. As you see the cat /proc/mtd output aos1 became to ubi how can I clean all mess.

dev:    size   erasesize  name
mtd0: 00040000 00010000 "sbl1"
mtd1: 00020000 00010000 "mibib"
mtd2: 00060000 00010000 "qsee"
mtd3: 00010000 00010000 "cdt"
mtd4: 00010000 00010000 "ddrparams"
mtd5: 00010000 00010000 "appsblenv"
mtd6: 00100000 00010000 "appsbl"
mtd7: 00010000 00010000 "ART"
mtd8: 00170000 00010000 "osss"
mtd9: 00010000 00010000 "pds"
mtd10: 00010000 00010000 "apcd"
mtd11: 00010000 00010000 "mfginfo"
mtd12: 00010000 00010000 "fcache"
mtd13: 00010000 00010000 "u-boot-env-bak"
mtd14: 00040000 00010000 "u-boot-env"
mtd15: 02000000 00020000 "aos0"
mtd16: 02000000 00020000 "ubi"
mtd17: 04000000 00020000 "aruba-ubifs"