is there any way to send manually sms command to my windows phone to unsilent it or triangulate its position? I can't use windows' platform because my country code is not listed so I can right down my telephone number. Please, any help would be much appreciated.
The short answer: No
The long answer: As you said the commands are just ordinary SMS, here's what one might look like: Sky#AgAx4dgZm1vlVMX0uvECq5PPcjKDw48YRZorwjmTMdJOeQj6ixvaclPyMHPtS2U5Y/ZfZQ==
So technically its possible. However... That string contains no (visible) information on what the phone is supposed to do. Which makes it really hard for you to create it manually :/
I'll update if I find something exciting on the topic :)