lost my iphone development certificates
<p>I had everything working fine on my macbook (keychain, certificates, profiles …etc) for some reason I lost everything on my macbook including the backup of my certificates that I should use in the keychain assistant, currently I am working on installing the latest version of mac os and iphone sdk and xcode in order to develop for iphone 4. But I don’t know what should I do to restore my settings and certificates or did I lose it all or what ?  I am very confused so please advise.</p>

<p>i even started from sctarch and submit new certificate but with no luck</p>

<p>Thanks for help</p>
