How can I de-brand my Lumia 640?

[Windows Central Question]

Debranding

Hello. I`ve got ATT Lumia 640 with RM-1073 product code. I want to install rom with different PC (1072) is there possible ?

 

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Re: Debranding

[Tutorial] How to easily flash (unbrand) you… | Windows Phone 8 Development and Hacking | XDA Forums