Error writing firmware...Incorrect platform id

[Moors7]

This topic had the (exact) same issue, have a look:

Using Electron in Manual or Semi-Automatic Mode Without SIM [Solved]

Hmm, you’re using firmware that’s incompatible with an electron. Seeing as you haven’t claimed it yet, it’s not yet available as a target. As such, you’ll have to compile using the CLI. Make an empty directory and copy & paste your code into a blank .ino file. Then, in that directory, issue particle compile electron . in the CLI. That should give you a binary which you can flash using particle flash --usb [.bin name].

That's also the solution I gave you in your other topic, hence the argument not to double post. Makes things more complicated than need be.