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Autotuner Fix for Audi ASG1 ECU Error 899C Guide

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  Problem: Trying to read an Audi e-tron 55 (2022) equipped with an ASG1 ECU using Autotuner Tool . I’m unable to write the Stage 1 file or even the virtual .bin file back to the ECU using AutoTuner. The process consistently fails with the following error in the logs: "Authenticating… Initialization error: 899c" Here’s what I’ve already tried: Ignition ON for more than 1 minute, OFF, then ON again before writing Bonnet open Multiple attempts with the same procedure Vehicle starts perfectly fine, no ECU lock or DTC issues The software and hardware versions seem to match correctly between the ECU and the file, so it doesn’t look like an obvious mismatch. Solution: Unlock VAG SFD security gateway. SFD needs to be unlocked before writing. Tested on some Taycan Turbo and GTS. No issue, 2021 and 2023 MY.
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XirDecoder V3.4 Adds Citroen VCU3000 Vmax Removal Solution

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  Xirdecoder ECU Chip tuning software released a new software version v3.4 on April 23rd, 2026. What’s new in this version? With the v3.4 update, we have delivered a faster and more powerful performance improvement. In addition, we are proud to announce support for many new ECU types. Additionally, since program updates are handled automatically on the server side, we will continue delivering updates as usual without requiring any manual update from users. This update has been released primarily to introduce a new feature and to provide general improvements. With this version, you can now perform speed limit removal operations for the Citroen EVPT VCU3000 ECU type. In addition, we have published the new ecu information for which the protocols have been activated. We would like to sincerely thank all our users for their support and contributions.
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Autotuner Update BMW Alpina ZF 6HP Gearbox via OBD

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 BMW ZF 6HP TCU: Live via 100% OBD! Tune the transmission of E-chassis BMWs directly through the diagnostic port with your AutoTuner Tool ! No need to get under the car anymore. Massive Coverage: BMW 1, 2, 3, 4, 5, 6, 7 Series (Petrol and diesel engines including N54, N55, M57…) BMW X1, X3, X5, X5M, X6, X6M, Z4 Alpina B3, B5, B6, B7 Method: 100% OBD (Normal Read) . An essential solution to remove factory torque limiters and speed up shift times for your customers! Key Features: Type: Transmission Control Unit (TCU) Mode: OBD NR Readout: Calibration MCU: MPC562 Read time: 2min Write time: 45sec Checksums correction Compatibility List*: Alpina Models: B3 (2007) / B3 S (2008) / B5 (2010) / B6 S (2009) / B7 (2010) Alpina Engines: 35i (N54) / 4.4 V8 bi-turbo BMW Models: 1-serie (2005–2011) / 2-serie (2014) / 3 GT-serie (2013) / 3-serie (1998–2012) / 4 Gran Coupé-series (2014) / 4-serie (2013) / 5 GT-serie (2009) / 5-serie (1995–2010) / 6-serie (2004) / 7-serie (2001) /...
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FormulaFlash 1.1.6.0 Update Adds 13 ECU Protocols

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 New software version for FormulaFlash programmer 1.1.6.0 will be released on April 24th, 2026! We got Fiat, Land Rover, PSA all together 13 protocols this time! Lots of updates will be followed in this hot hot summer! Formula Flash 1.1.6.0: [UPDATE TIME] APRIL 24, 2026 [VERSION] 1.1.5.0 → 1.1.6.0 NO.1 FIAT MARELLI IAW 5SF3 CAN [ST10F280] (OBD/BENCH Read+Write) MARELLI IAW 5SF3 KLINE [ST10F280] (OBD/BENCH Read+Write) MARELLI IAW 5SF.XX KLINE [ST10F280] (OBD/BENCH Read+Write) NO.2 LANDROVER CONTINENTAL SID201 [MPC563+M58BW016DB+95320] (OBD/BENCH Read+Write+CheckSum) NO.3 PSA CONTINENTAL SID 201 [MPC563+M58BW016DB+95320] (OBD/BENCH Read+Write) CONTINENTAL SID 805 CAN [AM29F400BB+93506] (OBD/BENCH Read+Write) CONTINENTAL SID 806 CAN [AM29F400BB+93506] (OBD/BENCH Read+Write) CONTINENTAL SID 803A KLINE [AM29BD160GB+95320] (OBD/BENCH Read+Write+CheckSum) CONTINENTAL SID 803A CAN [AM29BD160GB+95320] (OBD/BENCH Read+Write+CheckSum) CONTINENTAL SID 802 KLINE [AM29F40...
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Autotuner OBD Support for KTM Keihin KHR4 ECU

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 Shift into high gear: KTM Keihin KHR4 live via 100% OBD! Motorcycle tuning just got incredibly easy on your AutoTuner Tool ! Tune the fiercest single and V-twin engines from KTM directly through the diagnostic port. Coverage: KTM 1290 (Super Duke R/RR/GT, Super Adventure) KTM 1050, 1090, 1190 (Adventure) KTM 690 (Duke, SMC R, Enduro R) Method: 100% OBD (Normal Read). Required hardware: "KTM Euro4 OBD 6 pins cable". Unleash the true torque and power of these absolute beasts! Key Features: Type: Engine Control Unit (ECU) Mode: OBD NR Readout: Calibration MCU: SH72531 Read time: 3min 15s Write time: 3min Checksums correction Compatibility List*: KTM Models: 1050 Adventure (2015) / 1090 Adventure (2017) / 1190 Adventure (2013) / 1290 Super Adventure R (2021) / 1290 Super Adventure S (2021) / 1290 Super Duke (2017) / 1290 Super Duke GT (2016–2021) / 1290 Super Duke R (2014–2020) / 1290 Super Duke RR (2020) / 690 Duke (2016) / 690 Duke R (2016) / 690 Enduro R (20...
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Fix SID212 Write Error Autotuner Ford Transit OBD

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  AutoTuner read and write SID212 ECU successfully. 2019 Ford Transit 2.0TDCI 130bhp OBD VR (Virtual Read) Write modified OBD and throws error. Leave ignition on for 10mins (we did try 5mins and threw same error) then retry and ECU will initialise and then write. This is an early 2019 SID212 software and it threw error on initialising the ecu for write. We also did a 2022 today like you said no issue what so ever. We just wanted to give a headsup on this if anyone gets the early 2019 version in..
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Autotuner Mail-in Unlock Add 2022+ Bosch MD1CS016 ECUs

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 The core of the European car market is on AutoTuner! Tune the modern diesel powertrains (Blue dCi) from the Renault and Dacia lineup with your AutoTuner Tool . Great news for all tuning specialists working on the French and European car park! We are thrilled to announce that the Bosch MD1CS016 ECU is now officially supported on your AutoTuner Tool. This latest-generation ECU manages the modern diesel powertrains (the widely popular Blue dCi engines) that power a massive share of the market, ranging from essential daily drivers to the most relied-upon commercial vans in the Renault-Dacia group. Method: Bench (After Mail-in Unlock) To protect this highly sought-after solution and guarantee you a lasting competitive advantage, this protocol requires the ECU to be sent to our facility first. Once our team has completed the Mail-in Unlock, you will be able to read and write the ECU via Bench directly in your workshop. Supported Highlights: Renault Clio, Megane, Kadjar, ...
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