What you can do is use the forum search function to find THIS
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Ok, So I've i read all the instructions on how to do this but if you try it use the disconnect time as a guide only. You will have to find your own "sweet spot" time wise.....
Heres what I now know.
1/ this method all depends on your internet up/down speeds. My personal internet connection is wireless and bounces anywhere from 9.65 Mbps to 21Mbps. This to me seemed to be to unstable for such a precise "timed" method.
2/ Tried this at work where I know we have high download speeds and capped upload speeds. The magical number for me was 10 seconds, not 9 not 11 but smack on 10 seconds.
3/If you see the "no internet connection" error increase your diconnect time by 1 second and keep working with that method till it works. It can take some time, I started at 1 second and kept moving forward from there until finally at the 10 second mark I got the update advice.
4/ I had to do this a number of times. From 7.5 (8773) theres 3 updates... you guessed it.
update 1 was acheived at 10 seconds, update 2 at 10 seconds and the final update to 7.8 took 3 attempts and finally landed at 11 seconds.
ITS A BLOODY JOKE THAT WE HAVE TO DO IT THIS WAS BUT IT DOES WORK IF YOU HAVE THE PATIENCE