BMW CAS3+ C4 Editor — Repair ISN, Keys, ELV OFF — Support 1.2

Bin · 29.10.2025

Support and discussion for BMW CAS3+ C4 Editor v1.2. Repair CAS3+ after downgrade recover encrypted ISN create All Keys Lost EDC16 solution enable Crypto OFF save edit VIN ISN mileage power class EGS status key frequency and sync EGS + DME. Works with XPROG-M UPA-S Orange5 VVDI Prog Rosfar. MCU masks 0L15Y and 0M23S. Also searched as CAS 3 Plus.

CAS3++ C4 Editor | Repair ISN & Repair Tool

25.06.2025

The advanced tool for CAS3++. Repair ISN, repair bricked modules, and solve All Keys Lost.

Bin
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🏁 BMW Group – Diagnostics

BMW CAS3+ C4 Editor v1.2 — Repair ISN Keys and Sync — Community Help

Free CAS3+ Editor v1.2. Recover ISN and module state handle All Keys Lost for EDC16 perform Crypto OFF save run EGS + DME sync and edit VIN ISN odometer and key data. Supports masks 0L15Y 0M23S. Compatible with XPROG-M UPA-S Orange5 VVDI Prog Rosfar.

Quick intro
CAS3+ C4 Editor v1.2 targets encrypted BMW CAS3+ (MC9S12XDP512). Core features include Repair CAS3+ for bricked modules Repair CAS3+ ISN by attempting SK decrypt All Keys Lost EDC16 workflow Crypto OFF Save Mode manual EGS + DME ISN sync ELV OFF and full data editing for VIN ISN mileage power class EGS status and key frequency. Clear workflow — open 4KB EEPROM dump apply required actions save and verify.

Identify your module — CAS3 vs CAS3+

Part number on sticker. CAS3 usually starts with 61.35 and sits in the 6xx range. CAS3+ often starts with 61.35 and sits in the 9xx range.
MCU mask. CAS3 uses 0L01Y. CAS3+ uses 0L15Y or 0M23S.
Programming note. For CAS3+ at least one working key is usually required.

What is inside

Overview and screenshots
Change log and compatibility
Guides for Repair ISN Crypto OFF ELV OFF and EGS + DME sync
All Keys Lost EDC16 workflow
Troubleshooting and known errors
Download link and setup notes

Common questions

Module stays locked after write — recheck mask and dump size 4KB and repeat save with Crypto OFF then power cycle
ISN cannot be recovered — try a different dump version and confirm ECU family for EDC16 All Keys Lost path
Sync fails with EGS or DME — match 4-byte ISN first then run sync again and cycle ignition
Odometer not updated — verify correct area and write back full EEPROM not only info block

Download and full details — CAS3+ C4 Editor v1.2

BMW CAS3+ C4 Editor — Repair ISN, Keys, ELV OFF — Support 1.2

BMW CAS3+ C4 Editor — Repair ISN, Keys, ELV OFF — Support 1.2

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CAS3++ C4 Editor | Repair ISN & Repair Tool

BMW CAS3+ C4 Editor v1.2 — Repair ISN Keys and Sync — Community Help​

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BMW CAS3+ C4 Editor v1.2 — Repair ISN Keys and Sync — Community Help