The issue was that after I did the proper 1.1.1 > 1.1.2 > 1.1.3 (official upgrade from installer) my Yahoo Push Mail wouldn't work "The username or password for 'imap.apple.yahoo.com' is incorrect." The rest of the Mail client worked (POP/SMTP) but none of the accounts I was trying to setup under the iphone automatic "YAHOO" settings worked. (FYI… YouTube also didn’t work after the update)
I tried a few things... deleted Mail folder within iphone directory, installed BIG BOSS Mail Fix for Nate Trues jailbreak (even though I didn't use Nate’s method), Reset all data/settings within the iphone settings menu and none of them worked. During those attempts I went through the basic steps of installing and then restarting the iphone. I also tried again by uninstalling, restarting, reinstalling and restarting iphone. Still no luck
The funny thing is that when I installed a fix for my YouTube issue (Please connect to itunes...) the Mail issue was fixed. I was able to add my Yahoo accounts and receive all my folders that are configured within my yahoo mail account. AWESOME...
I'M NOT SAYING THAT THE "YOUTUBE FIX" RESOLVED MY MAIL ISSUE BUT I AM LETTING YOU KNOW MY EXPERIENCE.
YouTube fix for 1.1.3 iphone that worked for me…
-Add i.unlock.no to the Installer sources.
-Go to unlocking tools and install youtube fix.
-restart the iphone
(This didn’t work on the first try. I had to do the process twice… install fix, restart iphone, uninstall fix, restart iphone, install fix and then restart iphone)
I have no idea why it worked or why I had to apply the YouTube fix twice. I’m just sharing my experience with others. Hopefully it helps the peeps who have upgraded to 1.1.3