SBW-06D5H-U, BU51 bootloader - rawflash reports success but writes nothing (13 attempts)
Posted: Sat Aug 15, 2026 7:26 pm
Looking for help identifying the correct firmware for a drive with a MT1959 Boot BU51 bootloader, and understanding why rawflash reports success while committing nothing.
The drive
It was crossflashed with desktop BW-16D1HT 3.02 firmware before I got involved. Only the main firmware was overwritten - the bootloader was left intact, which is why the drive still enumerates and responds normally.
Which firmware should this be?
I scanned every image in the MartyMcNuts "All You Need" pack and the official mk-firmware-pack-20200720 (79 images). Exactly one has a BU51 bootloader:
The drive
Code: Select all
Model (sticker) ASUS SBW-06D5H-U (ultra-slim external USB, bus powered 5V 2.0A)
Manufactured March 2026
Factory ID SP1
P/N 15100-18282400
Enclosure Buffalo bridge, USB ID 0411:55aa
Reports itself as: ASUS BW-16D1HT 3.02
Drive ID: ASUS_BW-16D1HT_3.02_211711241413_MO4P58C1526
Platform: MTK19xx firmware module v1.30
Bootloader (0x3000): "MT1959 Boot BU51"
hex 4d543139353920426f6f742042553531
Which firmware should this be?
I scanned every image in the MartyMcNuts "All You Need" pack and the official mk-firmware-pack-20200720 (79 images). Exactly one has a BU51 bootloader:
Code: Select all
MK/HL-DT-ST/BU50N/HL-DT-ST-BD-RE_BU50N-1.00-NM00100-211711211006.bin