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Source: Launch (x431shop.eu) — October 21, 2026
Launch pushed a substantial IMMO and ECU software update to the X-431 platform on October 21, 2026, adding key programming and immobilizer coverage across a surprisingly broad spread of vehicles — from the still-on-the-road Saab 9-3 and 9-5 fleet to the latest Chinese-market JAC and MG models, plus Mercedes-Benz G-Wagen all-keys-lost work on the XPROG5. If your shop already runs an X-431 tablet or the XPROG5 IMMO programmer, most of this new capability arrives as part of an existing subscription, with no extra hardware to buy.
The release splits into two parts: general IMMO updates that roll out across the whole X-431 line, and XPROG5-specific functions for the deeper Mercedes-Benz, Volkswagen and Magneti Marelli jobs.
What the October X-431 IMMO Update Adds
The general updates apply to the full X-431 series, so they are the most relevant to independent shops running a standard diagnostic tablet. Nissan V11.26 adds IMMO password reading via chip removal, key matching, and body control module (HFM) replacement for the 2025 Nissan Kicks. MG (SAIC) V10.30 brings key matching for the MG4X, plus key matching and alcohol-interlock activation and deactivation for the MG S6 EV.
The JAC V10.50 update is the most expansive of the Chinese-brand additions, covering key matching for the Refine RF8, Refine RH8 PHEV, Yiwei 3, QX PHEV, Xingrui Series 7, and the T8 PRO and T9 EV pickups. As Chinese brands continue to gain share in export markets, this coverage directly addresses the gap many independent shops hit when a JAC or MG rolls into the bay. If you service a growing number of Chinese-built vehicles, a dedicated key programmer with current coverage is now table stakes.
Perhaps the most distinctive item is Saab V10.20. It adds key matching for the Saab 9-2, key adding and all-keys-lost matching for the 9-7, and IMMO matching for the 9-3 and 9-5 (1997–2010) plus the 9-5 Sport (2003–2012). Saab ceased production in 2011, but a loyal fleet remains on the road, and dealer support for it has essentially vanished — which makes aftermarket key programming the only realistic path for many owners.
Mercedes-Benz and Volkswagen: XPROG5 Goes Deeper
The XPROG5-specific Mercedes-Benz V10.80 release is the headline for locksmiths and specialist key shops. It adds a key disable function for Mercedes-Benz 4th-generation IMMO, all-keys-lost password calculation and key matching for the W463 G-Class over CAN, and key frequency detection. It also covers key adding, all-keys-lost matching and password reading for the W230 SL and the 215K/220K platforms using the CHIP method — a workflow that removes the need to pull the lock cylinder in many cases.
Volkswagen work gets a lift through XPROG5 IMMO V12.30, which adds wireless dealer-key generation for VW 5C/5D systems. For shops handling modern VW and Audi immobilizer jobs, this matters because 5C/5D vehicles increasingly require online dealer-key generation rather than traditional chip cloning.
ECU Read/Write: Magneti Marelli and Simos18 Coverage
On the ECU side, XPROG5 IMMO V12.30 adds BOOT-mode engine ECU read/write for Magneti Marelli 4DF, 4GF, 4GV and 4SF, and BENCH-mode read/write for the 4AF, 6JF, 6J0, 7GF, 8F3, 9GV and 10GF families. For tuners and ECU repair specialists, this expands bench access to a widely used Magneti Marelli range without additional tooling. The same release adds Jaguar BCM data read/write via the NXP MC9S12XET256, and Jeep/Ford BCM read/write via the Renesas R7F701056 — useful for module repair and cloning workflows.
The X-431 ECU Clone software reaches V10.76, adding an 8F3 KWP protocol reset, Simos18.1 anti-theft data cloning, and Simos18.7 BOOT-mode read/write. The Simos18 family powers many VW Group petrol engines, so these functions extend ECU tuning and cloning options across a broad install base. All of this ECU content applies to the XPROG5, the XPROG3 with PC adapter, and the X-431 ECU & TCU Programmer.
Why This Update Matters for Independent Shops
The recurring pattern across Launch's recent releases is coverage depth in exactly the places dealers are retreating from: dead brands, imported Chinese models, and locked-down late-model immobilizers. Saab is the clearest example — no factory support, a loyal owner base, and a steady stream of key-related jobs. For a shop that owns an X-431 platform, this update converts an existing subscription into new billable work rather than a new hardware purchase.
The practical takeaway is to keep your device on an active subscription and update the software before you take on a niche job. Coverage for a 2004 Saab 9-5 or a 2025 JAC Refine does you no good if the tool is still running last quarter's database. If your shop is expanding into key programming or ECU work and needs the hardware first, the Launch X-431 line and its IMMO and ECU add-ons are worth comparing against your current setup, and a software update service plan is what keeps that coverage current.
Written by James Mitchell, Senior Technical Editor at vxdas.com
