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Old 09-29-2007, 01:23 PM   #1
zakupka
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Default Error 507 on BB 7520 - PLEASE HELP

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Hi there,

I purchase a large lot of 7520 used cell phones. I downloaded the Nextel software as instructed from the download page on this forum.
I connected and goet to the Connecteding to ROM section and then it says unable to communicate.

Is there a way I can fix this? I have heard you can send them in pay around $30 and have it fixed. So there has to be a way to get some kind of software to do it yourself. Thanks for the help!
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Old 09-29-2007, 01:27 PM   #2
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Quote:
Originally Posted by zakupka View Post
Hi there,

I purchase a large lot of 7520 used cell phones. I downloaded the Nextel software as instructed from the download page on this forum.
I connected and goet to the Connecteding to ROM section and then it says unable to communicate.

Is there a way I can fix this? I have heard you can send them in pay around $30 and have it fixed. So there has to be a way to get some kind of software to do it yourself. Thanks for the help!
No need to do that....start here and you will have it up in no time!

What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ
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Old 09-29-2007, 01:27 PM   #3
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A 507 means the handheld Operating System is not found.

You need to have Desktop Manager (use the latest one) and the latest Handheld OS for the 7520.

See Main Page - BlackBerryFAQ for more details on how to install the OS.
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Old 09-29-2007, 01:35 PM   #4
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Awesome guys, thanks! I will give this a try this afternoon. Any more suggestions are appreciated.
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Old 09-29-2007, 03:24 PM   #5
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Wirelessly posted (BlackBerry8700/4.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)

That should do you! Remember to be patient!
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Old 09-29-2007, 05:17 PM   #6
zakupka
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When I go to the comand prompt my is set to Documents and each time I try to type in the command from the 'JL Cmander" page "this is not recognized as an internal or external command".

Any tips on what to do?
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Old 09-29-2007, 05:26 PM   #7
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If your device already shows error 507 then JL_Cmder will do nothing for you. Try this:

What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ
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Old 09-29-2007, 05:31 PM   #8
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Did you mean to post a different link? The one I see is the same as the first reply to Jl Cmder. Thanks for the help!
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Old 09-29-2007, 05:39 PM   #9
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If you already have 507 on the device then you simply need to reload the OS to the device. JL_Cmder only wipes and gives you 507.

Use Desktop Manager or the method I just posted to reload the OS to the device.
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Old 09-29-2007, 05:54 PM   #10
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Quote:
Originally Posted by John Clark View Post
If you already have 507 on the device then you simply need to reload the OS to the device. JL_Cmder only wipes and gives you 507.

Use Desktop Manager or the method I just posted to reload the OS to the device.
I use the Desktop Manager and go thru the process. Everything goes good until I get to the "Load Radio Software" and it say "Connecting to boot ROM", after 10 seconds or so it goes to the "Unable to communicate" page and I hit close to end. How can I get past the portion the BB is getting stuck on?
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Old 09-29-2007, 05:58 PM   #11
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It's possible this device is defective. There were issues (if I remember correctly) with 7520's becoming defective during OS upgrades. If that's the case, there is no way to fix it yourself. You may have a dead unit.
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Old 09-29-2007, 06:03 PM   #12
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Thanks for the help, I know a person that can fix it, but I have to pay him for it. I'm just trying to figure out how to do it myself and be nice to know if this happens again in the future.
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