I have flashed it on USB do I need to flash bootloader 0.70 in flash too ???

the image dont work with old flash

First of all, I wish to thank you for your great image. I am a new user of it and I find it great for my needs. Very stable and excellent online plugin server.

I have a question, "secondstage" related:
I have the experimental image on flash (and I update it regularly) and the Newnigma 2.3 installed on a usb stick. Does this mean that I have automatically installed seconstage #70 or do I have to do an extra step In order to install it?

As far as I can understand, the #70 would have been installed for sure if I had Newnigma on flash. But what now?

And finally, how can I see what secondstage I already have?

Thank you in advance for your answer

Greetings from Greece