Flashing Tools

For reading and writing the memory (flash) chips on the ECU you have to use specialized tools.

Luckily there are a variety of flashtools available for free these days. All of the following programs will work for MS42 & MS43 ECUs.

The bootloader area containing EWS key, UIF, etc can ONLY be overwritten in bootmode, regardless of which software used.

Credits of all Chipster software belongs to Kim Freding. Rest in Peace.

MS4X Dev Group Flasher

• On-the-fly checksum correction before flashing
• Checksum correction for local files
• EWS3 sync and reset
• Adaptations reset
• DTC read and clear
• DS2 command sender
• 64 KByte read/write (~20 seconds)
• 512 KByte read/write (~120 seconds)
• Go here for download and more info: MS4X Dev Group Flasher

Usage Instructions

JMGarage Flasher

• Use this only for virginizing, cloning or backing up the ECU
• Bootmode required (open the ECU and ground boot pin)
• No automatic checksum correction
• Only 512 KByte read/write (with seed keys, ISN, etc.)
• Download 2017 version

Usage Instructions

Chipster MSS5x Flasher

• On-the-fly checksum correction before flashing standard files
• Checksum correction is broken when altering program code so it's incompatible with the community patchlist
• 64 KByte read/write
• 512 KByte read/write
• To generate your own licence code, head over to MSS5X Activation
• Download Chipster MSS5x Flasher v1.1.2.3

Usage Instructions

MS41 ECU Flasher and EWS Delete

• Download MS41 ECU Flasher + EWS delete tool
• Download Siemens MS41 EWS Delete v1.02
• Download Siemens MS41 Flash Tool v1.05d

Chipster MS42 Checksum Corrector

• Corrects all three checksums inside your MS42 files
• Download Chipster MS42 Checksum Corrector

Chipster MS43 Checksum Corrector

• Corrects all five checksums inside your MS43 files
• Do not use when editing _mon variables or program code
• Download Chipster MS43 Checksum Corrector

Siemens GS20 Checksum Corrector

• Corrects the calibration and program section checksum based on file size (256kByte or 64kByte)
• Automatically creates a .0DA or 0.PA WinKFP file for easy flashing
• Download Siemens TCU GS20 SMGII Checksum Corrector

Galletto 1260

• No checksum correction
• Only 64 KByte read/write
• No download due to legal reasons