U-Boot: nand write problem

Hello everyone,

I try to write to my NAND flash and for this I tried different things. One is to use the U-Boot functionality and the other to use linux functionality (other thread). If I do it as described at the manual I always get an error and I do not know why. See the procedure here:

=> tftp 1000000 u-boot.bin Speed: 1000, full duplex Using eth0 device TFTP from server 192.168.0.11; our IP address is 192.168.0.111 Filename 'u-boot.bin'. Load address: 0x1000000 Loading: ################################## done Bytes transferred = 488468 (77414 hex) => nand erase 00000000 000fffff NAND erase: device 0 offset 0x0, size 0xfffff Bad block table found at page 65504, version 0x01 Bad block table found at page 65472, version 0x01 nand_read_bbt: Bad block at 0x000000ac4000 Erasing at 0xfc000 -- 100% complete. OK => nand write 1000000 00000000 000fffff NAND write: device 0 offset 0x0, size 0xfffff NAND write to offset 0 failed -5 0 bytes written: ERROR

NAND Flash memory map address:
MTD | Start offset |End offset | Description
MTD5 0x00000000 0x000fffff NAND boot binary
MTD6 0x00100000 0x001fffff DTB
MTD7 0x00200000 0x005fffff uImage
MTD8 0x00600000 0x009fffff Ramdisk
MTD9 0x00a00000 0x018fffff Rootfs image
MTD10 0x01900000 0x01ffffff User area

Does anyone know what the problem could be?

Thank you for your help.