Question re: SCT Tuner Devices

Have a question for all you guys with knowledge around tunes/SCT hand held tuners.

My car was tuned with an SCT Livewire...vintage 2010/11. Unfortunately, when I received the tuner from the previous owner it had given up the ghost and no longer worked.

My question is: What are my options if I want to take the car in to have it re-tuned?

I thought it might be as easy as just buying another SCT hand held tuner and using that, but I've heard you need to return the car back to stock (with the original hand held used to tune it) before you can do that? Otherwise you have to re-flash the PCM? <<<< How would one do this if required?

If you have a copy of your stock tune on a laptop, I'm pretty sure you can load it into a new SCT device and then load it into the PCM. The new SCT device is going to upload the tune that is currently in the PCM and consider that the stock tune though. You could just rename the files so you know which is which.

You should be able to tune over it just like normal. The device will save the current tune as "stock" and load your new tune as normal. It doesn't know the difference.