Thomson Speedtouch series WLAN router firmware
application/octet-stream
Magic Bytes
Offset: 0
42 4D
The Thomson SpeedTouch firmware format is a proprietary binary container developed by Thomson for their series of wireless routers and modems. These files are used exclusively for updating internal system software, patching security vulnerabilities, and refining network protocols during the device flashing process. As a legacy format associated with older hardware, these files are non-executable on standard desktop operating systems and present no security risk to modern workstations.
Validation Code
How to validate .bli files in Python
Python
def is_bli(file_path: str) -> bool:
"""Check if file is a valid BLI by magic bytes."""
signature = bytes([0x42, 0x4D])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .bli files in Node.js
Node.js
function isBLI(buffer: Buffer): boolean {
const signature = Buffer.from([0x42, 0x4D]);
return buffer.subarray(0, 2).equals(signature);
}
Go
func IsBLI(data []byte) bool {
signature := []byte{0x42, 0x4D}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
GET
/api/v1/bli
curl https://filesignature.org/api/v1/bli