[Q] Win10 fastboot - Doesn't work. Once worked. S1boot doesn't show up device manager

Hi,

I tried every way and guides shown here. Even disabling driver integrity checks et cetera.

Currently, there's a default stock ROM on my Xperia Z2.
I install the adb-setup-1.4.2.exe installer which installs adb / fastboot + the drivers for my X64 Win10.

Alright.
Reboot.

Then I plug in the USB cord into my turned off phone and hold Volume Up.
My phone vibrates.
I release the button.

Then in tthe Device Manager, this shows up:

Everytime.the.same.****ing.THING!

Anybody had the same problem?
One time, through some curious wonder, it worked. S1boot showed up and even the correct driver was instaled (back then via the adb-setup by a XDA user).
Well, what am I doing wrong?

I would be glad for any help. I've tried any troubleshooting guide there is by now and I am at the end of my knowledge.

Thanks for any help,
Michael

Just wondering how to update the OS once rooted

I recently rooted my Tab s 10.5 because I was getting fed up with not being able to use my SD card to store apps. So it went well no issues. However I was wondering, once a new version of Android is released i.e. Marshmallow is it possible to update to that OS and if so how do you do it? I would assume you need to download an .apk of it once its released and flash it over the same way I did when rooting? Anyway I figured I would ask if its something that can't be done then so be it. I'm happier with a rooted tablet running an older OS then an unrooted tablet with a newer OS.

Update to Data will not reconnect once lost

i started a thread called " Data once lost wont re-connect" back in June
I still don't know what the problem is caused by but it's definitely lollipop related.
i have possibly tried every lollipop rom there is to try and it's always the same.
i'm a driver and cover the whole of Scotland, sometimes some obscure places
with no DATA signal..Once the exclamation mark was up then only a reboot would
sort out the problem and reconnect the DATA. I have tried 3 phones and they all
have the same problem. Now all the phones are on the Three network so it could
well be an incompatability between Three and lollipop??!
I have wiped the phones and put in 38r and 44s and i have not had to reboot
any of the phones this week so it looks like the problem is not apparent on KitKat.
I'm starting to enjoy the Oneplus once again !!!nearly had the samsung edge a couple
of weeks ago!!!
I was thinking that i might of been the only one with this problem untill it happened to the wife's
phone when on holiday.The daughter gave up her phone and went back to an iphone so tried hers on lollipop
and the same problem .
Hope this might help somebody out there it's been driving me insane and although i have had to forget lollipop
and go back to KitKat the phone is now back to being usable and i get my emails and whatsapp when i'm supposed to
Paul

please help me kill my voicemate once and for all

I most frequently listen to music on my phone. My lg g3 notoriously acts up when I plug in my headphones. Songs will skip. Or start over. Or jump to the end. Or even stop altogether. Or my favorite. The God forsaken voicemate will activate countless times throughout a track. And I get ****ing pinged loud as hell in my ears so frequently I'm about to put the son of a bitch underneath my car tire and run it over 100 times or until I feel less annoyed. Can I kill the feature forever? Please tell me there is a way. Or my phone is going for a swim very soon. Not a year into owning it and I detest my phone because of this.