Support Cant even attempt to flash/root my Ace

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http://androidforums.com – Ok, sup everybody ive been at this for over 7 hrs straight and cant get any headway. Ive got a Samsung Galaxy Ace Gingerbread v2.3.6, i decided to i wanted to root it mainly because seemingly every second i would get the low disk space and it looks like all the good stuff are usually only available on rooted devices. Because of the 2.3.6 i had to downgrade and learned about odin, i got the drivers and installed them, plugged in the phone while in download mode but nothing came up on Odin(v4.38)...after several tries later i looked around and read about "heimdall"..i tried it for a (General)