Backup files won't work. Use a bios file from CDCN54WW. Make sure it is the full 8.64MB file. Make sure you rename it CD_Crisis.bin, and that it's the only file on a 128MB partitioned FAT-32 pen drive.
I need bios bin file. Can you help me? My Lenovo Y700 15ISK bios brick after my fault. I mistakenly installed lower version of bios and downgraded. Now my Lenovo on boot loop every 5-10 seconds. I try many times to blind flash like on your post, but nothing. I can't find .bin file. Please help me.