Change Dell Service Tag after motherboard replacements (XPS 15 9550)

Hello,

I had to replace the mobo in my XPS15 9550 after a component burn. I managed to buy a replacement used mobo on eBay. It seem all is working without issues only thing that annoys me is that the Service Tag is incorrect. I know it is only cosmetic since the laptop is out of warranty, but anyhow. Now all standard Dell tools that in the past worked on older systems do not seem to work on newer Dell models anymore.

Has anybody found a solution or workaround to change the Service Tag on the family of XPS 15 9XXX series or similar?

Thanks for reading, any help or solution appreciated.

Thomas