I am testing an micro sd extension cable:
https://www.amazon.it/prolunga-flessibile-adattatore-Extender-dellautomobile/dp/B073ZB3LZQ/ref=sr_1_5?s=electronics&ie=UTF8&qid=1519206889&sr=1-5&keywords=micro%2Bsd%2Bextender&th=1
Now it is easy to do new flash of the microsd and also have a copy to fast-swap in case of trouble or crash