Thomson Speedtouch series WLAN router firmware magic bytes (.bli)
.bli file signature: 42 4C 49 32 32 33 | application/octet-stream
Thomson Speedtouch series WLAN router firmware is a firmware image format used by Thomson and SpeedTouch networking devices, originally created and maintained by the vendor for router software distribution. It is used to update device operating systems, restore factory configurations, and deploy firmware revisions during maintenance or service operations. The format is generally safe, but as with any firmware image, it should be obtained from trusted sources and verified before installation.
Magic Bytes
Offset 0
42 4C 49 32 32 33
Sources: Gary Kessler
All Known Signatures
2 signature variants are documented for .bli files across multiple sources.
| Hex Signature | Offset | Sources |
|---|---|---|
| 42 4C 49 32 32 33 | 0 | Gary Kessler |
| 42 6C 69 6E 6B 20 62 79 20 44 2E 54 2E 53 | 0 | Gary Kessler |
Validation Code
How to validate .bli files in Python
def is_bli(file_path: str) -> bool:
"""Check if file is a valid BLI by magic bytes."""
signature = bytes([0x42, 0x4C, 0x49, 0x32, 0x32, 0x33])
with open(file_path, "rb") as f:
return f.read(6) == signatureHow to validate .bli files in Node.js
function isBLI(buffer: Buffer): boolean {
const signature = Buffer.from([0x42, 0x4C, 0x49, 0x32, 0x32, 0x33]);
return buffer.subarray(0, 6).equals(signature);
}How to validate .bli files in Go
func IsBLI(data []byte) bool {
signature := []byte{0x42, 0x4C, 0x49, 0x32, 0x32, 0x33}
if len(data) < 6 {
return false
}
return bytes.Equal(data[:6], signature)
}API Endpoint
/api/v1/bli
curl https://filesignature.org/api/v1/bli
See the full API documentation for all endpoints and parameters.
Related Formats
Frequently Asked Questions
What is a .bli file?
A .bli file is a Thomson Speedtouch series WLAN router firmware file. Thomson Speedtouch series WLAN router firmware is a firmware image format used by Thomson and SpeedTouch networking devices, originally created and maintained by the vendor for router software distribution. It is used to update device operating systems, restore factory configurations, and deploy firmware revisions during maintenance or service operations. The format is generally safe, but as with any firmware image, it should be obtained from trusted sources and verified before installation.
What are the magic bytes for .bli files?
The magic bytes for Thomson Speedtouch series WLAN router firmware (.bli) files are 42 4C 49 32 32 33 at byte offset 0. These bytes identify the file format more reliably than the extension alone.
How do I validate a .bli file?
To validate a .bli file, read the first bytes of the file and compare them against the known magic bytes (42 4C 49 32 32 33) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .bli files?
There is no officially registered MIME type for .bli files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .bli files?
Thomson Speedtouch series WLAN router firmware (.bli) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.