My phone won't turn on and keeps restarting.

[LASHON]

I have an 8700g which I bought a couple weeks ago used on eBay and worked perfectly until I accidentally downloaded a wrong theme for it and now it won't turn on. It just keeps restarting by itself. I've done a battery pull several times. I don't know what else to try. I know T-Mobile won't replace it since I bought it used.

[jsanders]

You need to find the utility file Jl_cmder, using it to wipe your BB and reload a new OS...

Download your BB OS from your carrier download site, install that on your PC. Find the Jl_cmder application and load it to your PC... There are instructions here on CB somewhere.

[peter11742]

I have a 8703e which I hope is the same as 8700.
I also got it from EBay.
I think you lost your operating system that is the reason it is not booting.
You have to get the desktop manager v4.3 and updated firmware for your phone
v4.2 and try to see if this will put a new operating system that works.
You need a usb cable from your computer to your blackberry.
I also forgot to ask you is your battery fully charged.
I hope this helps.
peter

[LASHON]

i got it working.
thanks guys

[eddie.0303]

hi im having trouble with my phone also because i tried to get a THEME

[eddie.0303]

I Tried To Get A Theme And Then The Blackberry Turned On And Off By Itself And Theres A Spinning Hour Sand Thing That Comes Up. How Do I Make My Phone Work???? Thanx Oh And I Have A Blackberry 8700c

[brenbob]

i can not get it to work how do u use the jl cmder thing
how am i supposed to do it

[palingpinter]

I got a faulty 8100 from eBay for £25 including P&P. The fault was:

• It shows an error message: Uncaught exception: java.lang.NullPointerException
• It keeps restarting

The steps I did to bring my 8100 back to life:

• The first thing I did was wiping the 8100 using JL_comander.
• After that, I reinstalled the OS. While reinstalling the OS, I got an error message on my DM: Unable to reconnect to the device during a multi-stage load operation.
• I knew that the problem was related to insufficient power, therefore I just swap the USB connection to the USB port that generates more power to solve the connection problems.
• I was able to reinstall the OS after swaping the USB port.
• I was able to make calls, send/receive text etc while the 8100 was still connected to the USB port. However, it switched off and keeped restarting after I disconnected the USB port.
• I checked the battery and I found that the battery was fine.
• I assumed that the problem was related to the electrical connection between the battery and the mainboard. I then dismantled the pearl, cleaned the mainboard using a brush, wiped the all the electrical connections using a cotton bud wetted with alcohol. I left the mainboard until the alcohol fully evaporated.
• Put everything back and fully charged the battery
• Switch the 8100 on.....and it works....

[leeksinatra]

I know that posting was old, but my blackberry has been doing the same thing. i dont know how to fix this... can someone please help me!

[leeksinatra]

Im new at this so can someone please give me a hand?

[DAVION7]

what is ur problem friend

[Ahmad_Gamerz]

Guys i have a bold 9000 and i downloaded a theme from a couple of days then 5 mins later i charged my phone and suddenly it switched off and kept on restarting, it works as long as the cable isn't connected to the phone as soon as i connect them it boots then reaches to about half the bar then keeps restarting, i tried another source to charge the battery, then i switched on my phone it worked nd all bt then i connected the charger nd it did the same thing all over again..and yea as i connect the cable my screen kinda blurs or something
any way to solve this please.. ?

[scherrie77]

bb curve8530 rebooting problem, white screen with my carrier logo an no red light but once. please help me

[scherrie77]

i need help i have a blackberry curve 8530 and when the battery went dead i called myself trying to charge it. but the only thing came on was a white screen and no red light what am i supposed to do. pleaase help

[scherrie77]

can someone help me with this problem with a white screen showing only my carrier logo and thats all its doing not going yo the home screen. no red light blinking