MagSafe Battery Pack UARP extraction failed

[Torrekie]

TorrekiedeMacBook-Pro:superbinary-parser-main torrekie$ python3 main.py --extract-payloads /Users/torrekie/Downloads/192e853454cdd13f7d59025a53ca86e831025567/AssetData/Firmware.acsw/A149FirmwareMobileAsset.uarp .
Traceback (most recent call last):
  File "/Users/torrekie/Downloads/superbinary-parser-main/main.py", line 59, in <module>
    super_binary = SuperBinary(args.source)
                   ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/torrekie/Downloads/superbinary-parser-main/super_binary.py", line 93, in __init__
    assert row_count == len(
           ^^^^^^^^^^^^^^^^^
AssertionError: Mismatched payload count between binary and metadata!

[spotlightishere]

Hi there, thank you for reporting this :)
For others to reference, the firmware in question is available to download from 192e853454cdd13f7d59025a53ca86e831025567.zip.

The metadata plist appears to define 6 types: DMTP, DTRX, DTTX, PDFW, STFW, and ULPD.
However, it appears that the payload has a seventh type, CHDR, is defined an additional 6 times. This is not referenced in metadata whatsoever.

Curiously, I'm unable to find similar examples across other firmwares, especially related to battery/power - have you encountered such? If not, hardcoding the CHDR type to be ignored may be preferable.