Initially I also found same problem and this is the first strange problem that I experience since I already did upgrade many many Blackberry in various models. I tried to upgrade a brand new 9220 (Davis) and it happened. After do trial and error several time, finally it works. Its easy, take out the SIM Card, replace the battery and back cover until it shows Error 507 again. You can do the rest with the Loader as mention in standard procedure. Do not forget to erase Vendor.XML file as usuall.
It works well and upgrade succesfully. Hope All of you that have some problem also success with the same way. Cheer
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Initially I also found same problem and this is the first strange problem that I experience since I already did upgrade many many Blackberry in various models. I tried to upgrade a brand new 9220 (Davis) and it happened. After do trial and error several time, finally it works. Its easy, take out the SIM Card, replace the battery and back cover until it shows Error 507 again. You can do the rest with the Loader as mention in standard procedure. Do not forget to erase Vendor.XML file as usuall.
It works well and upgrade succesfully. Hope All of you that have some problem also success with the same way. Cheer







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