Cannot select Editor with ETACS 8637B301

[kaizer_sham]

Hello Kolyandex, Hello others members
My name is Irma from Malaysia.
Currently i am using MMCodingWriter2.3
Work perfectly for Xpander.

To be informed, we just launch Mitsubushi Xpander Facelift here in Malaysia, Oct'24.
I try to conduct ETACS Decoding using MMCodingWriter 2.3:
1) I able to connect, save kon & cuf files
2) But when i click Editor, an error window pop-up saying :
"Unsupported ECU"
3) After check, the ECU in 8637B301
4) I able to load original kon file, which saved earlier.
5) But when click Write, again error
[Coding write failed]
"Key not received
Can't get security access to ETACS, key exchange operation unsuccessful."

Can you please help me with this issue?
Really really appreciated if you can help me.

[kolyandex]

Need to use MUT-3 for write coding.

[kaizer_sham]

Ok thank you very much for your quick reply
I've managed to copy kon file into CdgData folders.
To Write, i'm using MUT3-SE and choose Coding - On Vehicle Coding - input VIN no - choose updated kon file (edit using MUT Coding)
After choosing the file and click OK button, again an error pop up:
"Comm. discontinuation.
Press OK button to retry"
But even if i press OK, the error still persist and kon file not uploaded.

I even try to copy fresh kon file (with no edit) and immediately try to Write using MUT3-SE, but the same pop up still occur.
Please Mr Kolyandex. In Kolyandex We Trust