Case study

HH41V: reconstructing the GOTU/SUDH update process

HH41V maps the TCL/Alcatel mobile hotspot's FOTA update process, including its AP and modem package structure and GOTU/SUDH requests. It provides Python tools to inspect archive entries, fetch packages and compare package identity with a device configuration dump, plus notes on the updater and package inventory.

Targets: Firmware · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-07

Stars: 0
Last commit: 2026-10-21
Language: Python
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Python 3 and the standard library for the inspection tools.
Prerequisites: A device configuration dump is needed for package identity checks; the repository's guarded installer checks CURef before passing a package to the vendor updater.
Limits: The modem delta format is not yet mapped precisely.
License: Code: MIT; documentation and data: CC BY 4.0.

Cite

BibTeX

@misc{hh41v-fota-case,
  title = {{HH41V: reconstructing the GOTU/SUDH update process}},
  howpublished = {\url{https://github.com/devopnem/hh41v-fota}},
  url = {https://github.com/devopnem/hh41v-fota},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/hh41v-fota-case/}}
}

Plain text

HH41V: reconstructing the GOTU/SUDH update process. https://github.com/devopnem/hh41v-fota (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/hh41v-fota-case/

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About this entry

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Primary sources

README.md GitHub · devopnem/hh41v-fota · Revision 39f949c
docs/fota-protocol.md GitHub · devopnem/hh41v-fota · Revision 39f949c