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bri3d
VW_Flash
Python2021–2026
bri3d / VW_Flash

VW_Flash

Flashing tools for VW AG control units over UDS. Compression, encryption, RSA bypass, and checksums are supported for Simos18.1/6/10, DQ250-MQB, DQ381-MQB, and Haldex4Motion-Gen5-MQB.

3Distinct people
9Mentions
0Explicit recommenders
572GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Flashing tools for VW AG control units over UDS. Compression, encryption, RSA bypass, and checksums are supported for Simos18.1/6/10, DQ250-MQB, DQ381-MQB, and Haldex4Motion-Gen5-MQB.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 7:24:48 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year9 dated mentions

Observed mentions: 2021-07-28 16:17:57 UTC to 2026-01-17 18:37:52 UTC.

012342021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20232024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC211
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC404
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC202
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC000
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

What Hacker News says

2 sources
I did find an older VW "emergency start" product that claims to only work with Bosch MED17 and MED9, and I suspect it's using a memory-access primitive (either UDS or CCP) to release the immobilizer. It's trivial to disable an immobilizer in software by re-flashing the ECU, yes, but modern ECUs have two strong protections against this: * Cryptographic signature checking against update/re-flash payloads (I've done extensive research on these on VW Continental ECUs - https://github.com/bri3d/VW_Flash ) and an even better and more obvious protection: * The ECU application software won't descend into the re-flash software (Customer Bootloader) unless the immobilizer is free (a valid key is present). This is a lot of what helps to reduce surface area from an "emergency start" style attack to an AKL attack - now that the Customer Bootloader won
Read the rest
't start without the Immobilizer being unlocked, an attacker needs to remove the control unit to flash it with a Supplier Bootloader exploit ( https://github.com/bri3d/simos18_sboot ) or physical access (BDM/JTAG).
In CAN Injection: Keyless car theft
This year I don't anticipate having much free time, so I'm trying to engage more contributors in side projects, * Automotive ECU tooling, https://github.com/bri3d/VW_Flash * DJI FPV forward/reverse/all sorts engineering, https://github.com/fpv-wtf I've been working a lot with various folks using Discord and contributions are gradually shifting from me towards others, which has been great to see. As the old adage goes, teaching a project is truly the final form of knowing one - much harder than hacking alone, but ultimately more fulfilling. When I started my automotive ECU journey my goal was to demystify the "tuning" scene for a broader software engineering community, and I think I've generally been successful at this.
In Ask HN: What are you working on this year?

MAKE YOURSELF AT HOME

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