hi guys im in a big mess here....
i have a 8530i and was in the process of upgrading os and suddenly when it was erasing previous aplications this error comes up and leaves my phone on the horrible white screen of death!!! the good thing is that i did back up before installing but my deskto manager doesnt recognize my phone in order to restore the previous version....i have tried upgrading again and again for 2 days and no luck
also the error that started this whole mess was this
Device communications error encountered. [A:0x0000000F]
ive searched everywhere and cant find a cure for it
any help would be greatly apreciated

Here are official intructions from RIM. BlackBerry - Installing BlackBerry Device Software
Posted via BlackBerryForums.com Mobile

Or go to our 8300 sections and follow the directions in the yellow sticky at the top. Make sure that you use an OS specifically for the the 8350.

the problem is that the phone is completely blank and the new os wont go in an dm wont recognize the phone so i cant press the restore button
and everytime i try to load the new os the same error comes up

What do you mean completely blank? It won't turn on?

yea its on but it is stuck in the 507 and desktop manager will only recognize it in the apploader section but not in the backup and restore section

Of course it won't.
It has no OS on it; you cannot restore a backup until you've loaded the OS.

ok so ive tried to load the OS about 50 times now and i keep getting the same error
"Device communications error encountered. [A:0x0000000F]"
ive tried using different cables, tried it without the battery, tried it on different computers and the problem is always the same....please help!!!!

What device do you really have? Your profile says 8100, your post says 8530i (and AFAIK there is no 8530i) and you posted in the 8300 section. Is it perhaps an 8350i? Are you using it on Telcel?

the 8100 isnt the only phone i have sir......
i also have a 9000 and this 8350i which is the one im having problems with...
i use all three of them daily because of my work but i think that is a little off topic the 8350i is with nextel

Well sir, ..... your original post says 8530 and it makes a difference which device and which carrier.

If you search using Google with your error message "Device communications error encountered. [A:0x0000000F]" you will find quite a few "hits". It appears that this is a common error with the 8350, which prompted my question as to which device you really had.

The majority of those problems appear with devices on Boost, hence the question as to your carrier.

So you see, I was just trying to get some additional information to help you find a solution.

First of all, I suggest you use Google and search on the specific error message.

One resolution I found was to delete DM from the PC and do a clean reinstall. Remove the SIM from your BB. Wipe the device with Jl_cmder (see the FAQ for more information) and then reinstall the OS (see the yellow sticky at the top of the 8300 for one specific to the 8350i).

yup googled it opened every single page i could find about the code.... but none of the other posts had a solution..it seems it is a common problem for 8350 but no one knows how to fix it...
also deleted both dm and OS and reinstalled, didnt work,
used older version of OS (4.6) didnt work either...

Did you try wiping with Jl_cmdr? What to do next if Jl Cmder will not connect and wipe - BlackBerryFAQ

Did you try this? Desktop Manager will not connect/detect my BB

Have you tried BBSAK?

yes yes and yes
tried bbsak, tried jl_cmd and also completely uninstalled and reinstalled dm im losing my mind here

Maybe a dead BB?

I am out of options.

Has it been dropped or did you get it wet by any chance?

nope
it was working fine
was going to upgrade OS...wiped with bbsak, went to load new OS and then error msg

first ,connect the PC with the cable ,after 507,open the folder ,if you have installed the application in "C","C:\Program Files\Common Files\Research In Motion\AppLoader" open the loader.exe
good luck!