Guides
Plain-language explainers for technicians and owners. We focus on facts: how SFD works with common scan tools, what an offline challenge is, and how sfdcode delivers valid unlock tokens.
All guides
Pick a topic below. Every guide ends with the same honest takeaway: unlocking requires a cryptographic response — not a hidden "free" toggle.
"Free" SFD unlock — what we actually mean
No gimmicks: why there is no zero-cost token, and how paid unlock keeps quality and support sustainable.
Read guide →SFD unlock explained
The full workflow: offline challenge, SFD vs SFD2, and how workshops pair tools with token delivery.
Read guide →VAG SFD vs VAG SFD2
Volkswagen Group: generation 1 (instant tokens) versus generation 2 (manually sourced unlocks) — scope, identification and checkout.
Read guide →OBDeleven & SFD unlock
Mobile-first workflow notes for One-Click Pro users chasing offline challenges.
Read guide →VCDS & SFD unlock
Ross-Tech workflows for HEX-NET, HEX-V2 and enthusiast garages.
Read guide →VCPC / VCP tools & SFD
Passthrough stacks built on ISO 22900 for OEM VC apps.
Read guide →Autel & SFD unlock
Ultra, MS908S Pro II and tablet UX specifics.
Read guide →