Honestly... no joke, if you wrote some book (you likely have already) tell me where I can buy it! ..if you haven't written something, you certainly should! - your messages are a pleasure to read and even though your technical skills make me cringe lol your English is a delight to read
I should add that there's absolutely no need to cut the cover of the SiB to gain access to the nuclear reactor aka Lithium battery.
You just have to put both your thumbs on the cap (tip of triangle on cap facing away from you) and with your middle fingers (yup the ones used for rude gestures, so make sure to be careful and not damage these precious ones), you lift the cover from the sides sliding over the thumbs as they press down onto the cap.
The Polycarbonate is so strong that indeed makes it hard to pull the SiB apart, but its easy once you figure out the method. If you do cut the cover, then the SiB can no longer be used in button mode because everything about the SiB works together, to well.. allow it to work.
Having said the above, the strangest thing about your report is that it goes green and then flashes white for like 30s which is EXACTLY the light pattern shown by the SiB when it's ready to provision. I'm just so surprised you haven't managed to pair it to your SiMP or using the direct WiFi connect method.. though it is an older SiB (early version) and nowhere near as refined as the current ones.
Like I said on the other post, happy to send you a replacement free of charge if you can pay for the shipping.