| Offset | Length | Data | Description |
|---|---|---|---|
| 0x00 | 1 | Signature | |
| 0x01 | 3 | Some random data, threat as zero when calculating header CRC | |
| 0x04 | 4 | Length of firmware data | |
| 0x08 | 4 | CRC32 of firmware data | |
| 0x0C | 4 | Unknown | |
| 0x10 | 4 | Unknown | |
| 0x14 | 2 | Firmware Version | |
| 0x16 | 2 | Unknown | |
| 0x18 | 4 | CRC32 of previous data where bytes at 0x01-0x03 threated as zero | |
| 0x1C | Firmware data |