used GSM synchronization V70 2005

[DomKratom247]

Good day, i have customer that wants to have donor gear selector module synchronized with his V70 2005. He plugged the GSM and it seems like transmission went into limb mode, he says it takes long time to even get going which i suggest is because car locked transmission in 3rd gear. The issue is, that he doesnt have access to his old GSM, so i cant take configuration data from old GSM.

What is correct way to synchronize already configured module?

AI is absolutely unreliable and cant even get straight how the module works. But it suggested to me that i need bruteforce pincode of central electronic module (CEM) using VDASH software, so it can rewrite new GSM module to work with his car, but customer refuses option of buying new gsm module from Volvo, and official new module configuration due to being expensive (1100 dollars)

[dikidera]

Is the new GSM module 1:1 as the old one? It communicates over LINBUS I think.