求助 在线等 5.15 无法刷系统

jesu***

root@OpenWrt:~# ubiformat /dev/mtd12 -y -f /tmp/xiaomi1.1.12
ubiformat: mtd12 (nand), size 37486592 bytes (35.7 MiB), 286 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes
libscan: scanning eraseblock 285 -- 100 % complete
ubiformat: 286 eraseblocks have valid erase counter, mean value is 1
ubiformat: error!: cannot open "/tmp/xiaomi1.1.12"
           error 2 (No such file or directory)



跪求大神求助   无论怎么刷系统都是提示这个，WEB固件一重启就回到原来的，永远刷不进别的。求助真的不会搞了