#2664 Headers Error Warning when Extracting Samsung Firmware

[Brandon Amadeus Prajogo]

Hello. I would like to report a persistent issue regarding a false "Headers Error" warning when extracting large Samsung firmware files.

• 7-Zip version: 26.01 (x64)
• Windows version: Windows 11 24H2 (OS Build 26100.8457)
• File Name: SAMFW.COM_SM-A566B_XID_A566BXXSACZE2_fac.zip
• File Link: https://samfw.com/firmware/SM-A566B/XID/A566BXXSACZE2
• File Type: Zip64 archive (Size: ~10.5 GB to 12.5 GB).

Description of the Issue:
Every time I attempt to extract these official Samsung firmware zip files using 7-Zip, the extraction window immediately flags a "Warnings: Headers Error" at the very beginning of the process.

However, this appears to be a false alarm (lax parsing/compatibility issue with Zip64 layout specifications):

1. The MD5 checksum of the downloaded zip file matches the server perfectly, confirming no download corruption.
2. If the archive is extracted using the native Windows File Explorer (Extract All) or WinRAR, it extracts completely fine with absolutely no errors or warnings.
3. The extracted .tar.md5 binaries inside are 100% intact and flash successfully via Samsung Odin with valid internal checksum passes.

It seems 7-Zip's strict parser triggers a "Headers Error" because of how the Zip64 fields (such as 'disk number start' or local vs central directory structures) are written by Samsung's automated server packaging system when handling files over 4GB.

Steps to Reproduce:

1. Download an official large Samsung firmware package (>4GB Zip64 format).
2. Extract it using 7-zip.
3. The "Headers Error" warning box will appear under the progress bar, even though the output file is generated completely uncorrupted.

Could you please look into loosening the Zip64 header validation slightly for these specific server-generated archive variants to prevent false corruption alarms? Thanks.

[Igor Pavlov]

If there are errors in zip64 headers, you can write to samsung and ask them to fix these errors.

[Brandon Amadeus Prajogo]

Thanks for your reply! I've send a report to Samsung's CEO Office regarding the headers error and they said they will foward it to relevant departement.