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Old 04-22-2008, 10:28 PM   #1 (permalink)
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Default Downgrade OS?

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Hi, how do I downgrade my OS on my 8100 Pearl.? I have the 4.5.0.18 and I want to switch it back but, I read the FAQ on how to downgrade and it says I need to remove the OS in control panel but the thing is that I reformatted my harddrive now I don't have that in there, what can I do now? Thanks
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Old 04-22-2008, 10:29 PM   #2 (permalink)
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did you download the latest official release of the 8100 OS? and remove the vendor.xml file? if so just connect your device and launch DM.
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Old 04-22-2008, 10:33 PM   #3 (permalink)
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Well I wanted to try the new realease from Rogers, 189 or so, do I just go to 107 from T-mobile then just connect it and there? then after try Rogers?
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Old 04-22-2008, 10:37 PM   #4 (permalink)
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you can use the Rogers install, just download it from there.

http://www.blackberryforums.com/gene...ilanguage.html
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Old 04-22-2008, 10:42 PM   #5 (permalink)
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I do have that, I installed it and then deleted the vendor file then plugged it in, open DM and it doesnt prompt me anything...
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Old 04-22-2008, 10:43 PM   #6 (permalink)
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click app loader and it should ask if you want to replace your current OS with an older version
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Old 04-22-2008, 10:48 PM   #7 (permalink)
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OMG, thank you..it didn't show that before... but i think it was because i was deleting the vendor first then installing the old OS, but it works.. Thank you so much, and for the quick! responce
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Old 04-22-2008, 10:49 PM   #8 (permalink)
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Not a problem at all
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Old 04-22-2008, 10:58 PM   #9 (permalink)
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Quote:
Originally Posted by Sith_Apprentice View Post
Not a problem at all
I love this place!
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Old 05-27-2008, 11:19 AM   #10 (permalink)
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Quote:
Originally Posted by Sith_Apprentice View Post
click app loader and it should ask if you want to replace your current OS with an older version
And if it doesn't ask if you want to replace, what should I do?
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Old 05-27-2008, 12:20 PM   #11 (permalink)
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Uninstall the version you don't want (via Control Panel - Add/Remove Programs).
Locate and delete VENDOR.XML
Restart Desktop Manager should do it now.
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Old 05-28-2008, 01:14 PM   #12 (permalink)
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No love. I ended up having to use loader.exe /nojvm to load it, as described here:

What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ
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Old 07-07-2008, 05:12 PM   #13 (permalink)
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will using the rogers download mess with my faves usage?
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Old 07-07-2008, 05:15 PM   #14 (permalink)
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No, myfaves will still work.
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Old 07-07-2008, 07:25 PM   #15 (permalink)
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Thanks for the quick reply!!!
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Old 07-07-2008, 09:14 PM   #16 (permalink)
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I'm having a huge problem getting this to work for me... if anyone has anymore tips... it would be greatly appreciated
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Old 07-07-2008, 09:16 PM   #17 (permalink)
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Nvm... i got it....
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