Cant route using Siyah v6.0beta5

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http://androidforums.com – Hi guys I am currently running Jellybean on my i9100 galaxy s2. I need to route it. I followed the steps in routing for dummies thread. Unfortunanetly when I use the Odin to download Siyah v6.0beta5 on my phone it fails. I have set usb to debugging and I do put the phone to downloading mode. However it Passes when I do it with a gingerbread kernel version. when the phone starts unfortunately it gets stuck on the first screen where it shows yellow explanation mark and doesn't go further. So I to use the 'stock version' to restore it back to factory settings. Can somebody help me to ov (General)