NAND device: Manufacturer ID: 0x2c, Chip ID: 0xac (Micron NAND 512MiB 1,8V 8-bi)
Bad block table found at page 262080, version 0x01
Bad block table found at page 262016, version 0x01
nand_read_bbt: Bad block at 0x01ac0000
nand_read_bbt: Bad block at 0x01ae0000
nand_read_bbt: Bad block at 0x01b40000
nand_read_bbt: Bad block at 0x01b60000
nand_read_bbt: Bad block at 0x02bc0000
nand_read_bbt: Bad block at 0x02be0000
nand_read_bbt: Bad block at 0x03240000
nand_read_bbt: Bad block at 0x03260000
nand_read_bbt: Bad block at 0x033c0000
nand_read_bbt: Bad block at 0x033e0000
nand_read_bbt: Bad block at 0x03f40000
nand_read_bbt: Bad block at 0x03f60000
nand_read_bbt: Bad block at 0x03fc0000
nand_read_bbt: Bad block at 0x03fe0000
nand_read_bbt: Bad block at 0x057c0000
nand_read_bbt: Bad block at 0x057e0000
nand_read_bbt: Bad block at 0x05ac0000
nand_read_bbt: Bad block at 0x05ae0000
nand_read_bbt: Bad block at 0x05bc0000
nand_read_bbt: Bad block at 0x05be0000
nand_read_bbt: Bad block at 0x07440000
nand_read_bbt: Bad block at 0x07460000
nand_read_bbt: Bad block at 0x078c0000
nand_read_bbt: Bad block at 0x078e0000
nand_read_bbt: Bad block at 0x07cc0000
nand_read_bbt: Bad block at 0x07ce0000
nand_read_bbt: Bad block at 0x134c0000
nand_read_bbt: Bad block at 0x134e0000
nand_read_bbt: Bad block at 0x14940000
nand_read_bbt: Bad block at 0x14960000
nand_read_bbt: Bad block at 0x15540000
nand_read_bbt: Bad block at 0x15560000
nand_read_bbt: Bad block at 0x15ac0000
nand_read_bbt: Bad block at 0x15ae0000
nand_read_bbt: Bad block at 0x17140000
nand_read_bbt: Bad block at 0x17160000
nand_read_bbt: Bad block at 0x17840000
nand_read_bbt: Bad block at 0x17860000
nand_read_bbt: Bad block at 0x1f0c0000
nand_read_bbt: Bad block at 0x1f0e0000
nand_read_bbt: Bad block at 0x1f6c0000
nand_read_bbt: Bad block at 0x1f6e0000
So it seems tge device is detect and bbt are correctly calculated...