first time i attemp changing os number , just want to be sure before

[AlexSr20]

I have a customer impala 2010 v6 3.9 with a burned ecm , and i have licenced a 2008 4cylinder ecu , exactly the same e37 ecu with the same service number . I have found a stock 2010 impala v6 3.9 tune in repository but i cannot segment swap the motor section because of the different os number between both ecu. The stock impala 2010 tune i have found is perfect for me , i can swap vin number to match my car into this tune . Should i pay a second licence for the 2010 impala tune to do a complete rewite of the ecu to make it work on my 4cyl ecu ? Just want to make sure before paying a second time , this is the way to make it work right . Thx , i do a lot of custom tune for my customer in my area and swapping os number from compatible ecu is one thing missing to my knowledge. Thx for reply , want to be sure before paying another licence

[Bill@HPTuners]

We would NOT recommend using someone elses file in your vehicle.

[Montecarlodrag]

Flashing a 2008 E37 with a 2010 File may brick it even if you use dealer tools. Don't do it, you will lose the ECM and the license.

[AlexSr20]

We would NOT recommend using someone elses file in your vehicle.

So , my only option is try at my risk ? or i can change os number manualy to segment swap ? this e37 ecm with service number 12612397 , gm sell it like a replacement for both car and more modele, and from year 2007 to 2012 in these car . I have done reserch before trying the first time to make it done . to be sure this is the same and right ecu to use , exept the programation inside

[AlexSr20]

We would NOT recommend using someone elses file in your vehicle.

and for the os number , if i want to do tryout changing it to make segment swap , any way to do it ? and if i buy User Defined Parameters Feature at 169,99$ , what i can do different versus the normal vcm editor and i assume just buying 1 time for always can be used futur or older tune ? Thx , i have these question for a moment