hi..

i upgrade to win 10 last friday but i downgrade to win 7 two days later because some softwares for my work didn't function.
but now, i guess i got time to find solution for those softwares to start working in win 10.
so, i think i want to try to upgrade to win 10 again. if things not working like i plan, & if i want to downgrade to win 7 again, is it possible? (downgrade for the 2nd time)
if so, the 30 days period start when i upgrade last friday? or is it start when i upgrade for the 2nd time?

thanks