BMW M3 Forum (E90 E92) - View Single Post - MSS6x Flasher

Terraphantm · 04-30-2026, 12:39 PM

Don’t know how many here still use the application, but did release an update the other day

https://github.com/terraphantm/MSS6x-Flasher/releases

Version 1.1.0. Multiple updates since last release:

Updated Ediabaslib to newer release; .Net 4.8.1 now required
Default port is now COM1 as EdiabasLib dropped support for D2XX on Windows
RSA Bypass code is improved and notably faster
Added ability to restore stock (i.e remove RSA bypass and patches)
Tunes are now automatically flashed after flashing a program instead of having to click the "flash tune" button
Reads are now done in "programming mode" and should be about twice as fast as before
Full reads are now saved in both the combined format and in BDM format (separate files)
If no VIN is found, VIN will be assumed to be AA00000 for file saving purposes
MSS60 140E and older no longer require an RSA bypass for tune writes
Detect if a "pseudo RSA" bypass used by some tuners is present, in which case the loaded file will be flashed without modification (i.e no checksum correction). Recommend manually correcting checksums or disabling checksums if this technique is used
Decreased size of flash blocks from 254 bytes to 252 bytes - this allows standard D-CAN cables to work without bricking
More safety checks implemented
During the RSA bypass, the UC3F censorship routine is now disabled. This does not remove the censorship from the DME (need BDM or mpower32's software for that), but does prevent it from being set again.
Added ability to request Level 3/4/5 security access to the Advanced Menu. Unclear if there are any uses for level 4/5, but makes it easier to test.
Now display the "internal" software numbering (i.e v638 for 80E) if it is readable.
Fixed a few UI issues

Probably more stuff that I'm not remembering. Let me know if you guys have any issues

04-30-2026, 12:39 PM	#29
Terraphantm Major 1348 Rep 1,261 Posts Drives: i5 M60, E46 M3 Join Date: Apr 2009 Location: N/A iTrader: (1)	Don’t know how many here still use the application, but did release an update the other day https://github.com/terraphantm/MSS6x-Flasher/releases Version 1.1.0. Multiple updates since last release: Updated Ediabaslib to newer release; .Net 4.8.1 now required Default port is now COM1 as EdiabasLib dropped support for D2XX on Windows RSA Bypass code is improved and notably faster Added ability to restore stock (i.e remove RSA bypass and patches) Tunes are now automatically flashed after flashing a program instead of having to click the "flash tune" button Reads are now done in "programming mode" and should be about twice as fast as before Full reads are now saved in both the combined format and in BDM format (separate files) If no VIN is found, VIN will be assumed to be AA00000 for file saving purposes MSS60 140E and older no longer require an RSA bypass for tune writes Detect if a "pseudo RSA" bypass used by some tuners is present, in which case the loaded file will be flashed without modification (i.e no checksum correction). Recommend manually correcting checksums or disabling checksums if this technique is used Decreased size of flash blocks from 254 bytes to 252 bytes - this allows standard D-CAN cables to work without bricking More safety checks implemented During the RSA bypass, the UC3F censorship routine is now disabled. This does not remove the censorship from the DME (need BDM or mpower32's software for that), but does prevent it from being set again. Added ability to request Level 3/4/5 security access to the Advanced Menu. Unclear if there are any uses for level 4/5, but makes it easier to test. Now display the "internal" software numbering (i.e v638 for 80E) if it is readable. Fixed a few UI issues Probably more stuff that I'm not remembering. Let me know if you guys have any issues Last edited by Terraphantm; 05-02-2026 at 12:46 PM..
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