[lsweeney]

My Blackberry Desktop Manager Hung on a sync function. I killed it. Rebooted my Blackberry, and that was the end. The startup was in an endless loop and could not complete the boot operation. The white bar would stop after about a minute or two, and then start over again.

I'm posting this as I was able to resurrect it following these instructions.

My battery was not dead so I skipped to the part after charging:

Bold 9900 Not Starting Up - Battery Issue?! - BlackBerry Support Community Forums


Re: Bold 9900 Not Starting Up - Battery Issue?!
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09-12-201110:24 AM



OK, dead or deeply drained battery... Leave the device to charge 2-3 hours, and then, still connected to the charging cable, remove the the battery from the device a few seconds and reinsert it. If it boots--leave it to charge to 100% (check Options > Status for the percentage). If it doesn't reboot on the first attempt, leave it several more hours. I've had one charge for two days before it came back to life after an extreme battery depletion. Every 3-4 hours, with the device still connected to the charger, you can remove and replace the battery to see if it reboots.

If it doesn't boot--try using another wall outlet charger or just another wall outlet. If you are connected via USB to the PC, make certain that you have Desktop Manager (or the USB device drivers) installed.
Make certain your USB cable is connected to one of the PC's main rear USB ports. Not a USB hub, nor a monitor USB port, nor a USB port on the front of the PC.



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THEN, if after a day you cannot bring the battery to life per the above: If your BlackBerry stays powered off with a black screen, follow the instructions below. The only indication of life might be the blinking red LED light in the top corner. Nothing seems to wake it up and Desktop Manager doesn't recognize any device is connected.

1) Make sure you have Blackberry Desktop Manager installed.
BlackBerry - BlackBerry Desktop Software - BlackBerry Software at BlackBerry.com
2) On your PC, go to Start > Run and copy and paste the following line exactly (meaning with the quotation marks):

"c:\program files\common files\research in motion\apploader\loader.exe" /nojvm

(My loader.exe file was here on a 64 bit machine: C:\Program Files (x86)\Common Files\Research In Motion\AppLoader)

3) The Application Loader Wizard will appear -- click "Next."
4) In the "Connection:" drop-down menu, you should see "USB-PIN: UNKNOWN". Click the "Next" button.
5) You should then see a list of applications ready to be installed for your Blackberry. Hit Next and Finish and you are well on your way to getting your Blackberry back to life. Just don't disconnect anything and let the lengthy process finish completely.

NOTE: If you do not see a list of applications mentioned in step 5 and instead see the message "The Blackberry Desktop Software does not have Blackberry Device Software for the device that you have connected to the computer. Contact your wireless service provider or system administrator," then you must download Blackberry's Operating System for your carrier and device. (I experienced this and had to download the OS even though I had the Desktop Software installed.)
BlackBerry & - BlackBerryFAQ
Just select the appropriate carrier and network type, select your Blackberry model from the list and download the latest version. Install this download and follow the above steps again and you should be on the right path.

[fyrftd]

I have found that mere plugging in to charger when nearly bricked is unlikely to revive the 9850. However reinstall of OS (and wiping out device) is also not necessary. I have been able to trick the device using the laptop connection.

With BB Desktop running connect device with battery removed. You want to get the battery icon with red X to show up, so try the power on button (bottom right). Then via a yet to be perfected pattern of slipping the battery in and out while pressing power on, with some pregnant pauses inbetween, all the sudden the battery with lightning bolt replaces the red X one and charging commences.

There is some combination of errant application code and the OS that is getting the device in a death spiral. I have had 2 HDWE warranty replacements, and it goes away but comes back eventually (in days before the warranty repl., and in months after the replacement). This last time after a revival but before replacement, I discovered a new death spiral in progress, and since I was a way from a charger I turned off 3G and then hit the full power off (via icon/app). It still lost the remaining 30% charge and re-bricked in the off state!

[lsweeney]

I followed these same instructions but this time it hung at after erasing aps and installing the system software. The error that comes up is Reconnecting to JVM. It says to disconnect and retry, etc.

Tried this several times to no avail.

What did work is while the error message was sitting on the computer screen, I pulled the battery. When I put the battery back in I clicked on retry, and then it was able to complete the software install.

I highly recommend Blackberry Protect. It had backed up all of my critical items at 1am this morning before my phone died. I was able to restore everything and I have lost nothing but maybe a few emails.