asus rt-ac68u spansion flash programming

<Chip information>;
NAND ID: 0x1f1001d_0x1f1001d
Manufacturer: Spansion
>>Auto detected successfully.
>>The parameters are as below:
 *Page data area size2048 bytes.
 *Page spare area size64 bytes.
 *Each block has 64 pages
 *The chip has 1 chip-select signals.
 *There are 1024 blocks each chip-select.
 *Total 1024 blocks each chip.
 *Total memory size 128 Mbytes
 *Range 0x0 - 0x7ffffff
 *Memory type: SLC NAND

<Erase chip>:
NAND ID: 0x1f1001d_0x1f1001d
Manufacturer: Spansion
>>Auto detected successfully.
>>The parameters are as below:
 *Page data area size2048 bytes.
 *Page spare area size64 bytes.
 *Each block has 64 pages
 *The chip has 1 chip-select signals.
 *There are 1024 blocks each chip-select.
 *Total 1024 blocks each chip.
 *Total memory size 128 Mbytes
 *Range 0x0 - 0x7ffffff
 *Memory type: SLC NAND

Total 1024 blocks, 1024 good blocks.
Erase all good blocks successfully.

### rt-ac68u_1.0.2.0_us.bin ###

<Programming data>:
Programming to address 0x0.
To write spare area.
Empty data(0xFF) will be added to the tail of the file.
NAND ID: 0x1f1001d_0x1f1001d
Manufacturer: Spansion
>>Auto detected successfully.
>>The parameters are as below:
 *Page data area size2048 bytes.
 *Page spare area size64 bytes.
 *Each block has 64 pages
 *The chip has 1 chip-select signals.
 *There are 1024 blocks each chip-select.
 *Total 1024 blocks each chip.
 *Total memory size 128 Mbytes
 *Range 0x0 - 0x7ffffff
 *Memory type: SLC NAND
Programming finished successfully. Total 232320(0x38b80) bytes.

<Verify>:
NAND ID: 0x1f1001d_0x1f1001d
Manufacturer: Spansion
>>Auto detected successfully.
>>The parameters are as below:
 *Page data area size2048 bytes.
 *Page spare area size64 bytes.
 *Each block has 64 pages
 *The chip has 1 chip-select signals.
 *There are 1024 blocks each chip-select.
 *Total 1024 blocks each chip.
 *Total memory size 128 Mbytes
 *Range 0x0 - 0x7ffffff
 *Memory type: SLC NAND
Reading data from 0x0 to 0x36fff.
To read out data of bad block(s).
To verify spare area data.
Verify successfully. Total 231923(0x389f3) bytes.