I need to reprogram my Jabra BT125 to a new phone, but don't have the instuctions to do that.

taken from the manual found at

http://www.jabra.com/sites/Jabra/GNimages/Products/WirelessHeadset/BT125%20Black/Documents/User%20manual/BT125_UM_NA_EN_471.pdf

1. Put the headset in pairing mode
• Make sure the headset is off .
• Press and hold the answer/end button until a solid blue light comes on.

2. Set your Bluetooth phone to ‘discover’ the Jabra BT125
Follow your phone’s instruction guide. This usually involves going to a ‘setup,’ ‘connect’ or ‘Bluetooth’ menu on your phone and selecting the option to ‘discover’ or ‘add’ a Bluetooth device.* (See example from a typical mobile phone in fig. 3).

3. Your phone will find the Jabra BT125
Your phone then asks if you want to pair with it. Accept by pressing ‘Yes’ or ‘OK’ on the phone and confirm with the passkey or PIN = 0000 (4 zeros). Your phone will confirm when pairing is complete. In case of unsuccessful pairing, repeat steps 1 to 3.

This is one of the mistake commonly done by many people. First you need to pair. Let me walk you through. First, the headset has to be switched to pairing mode which is done by holding the on button for a while even after the headset is switched on. Then the bluetooth headset light will remain on. You switch on the phone bluetooth, search new device. Then select it and press the option for pairing. Read the instructions which come on the phone display and select accordingly. It will ask for passcode which is usually four zeros. Then it will get paired ask you whether to connect. You select connect and you are done.

default should be 0000
methinks
try it

Mine is a Blackjack II, but i did get it to connect. Hold the clear button down on the Jabra until it lights solid blue, keep holding it with one hand while you use the other hand to operate your Blackjack. I went to Settings, then Connections, then Bluetooth, then "Add new device". As long as my Jabra was lit solid blue, the phone found the headset. Then it will ask you for the pin code, which i found by accident (0000 - four zero's).

Go to this site, and it will walk you through each step to connect your particular Jabra headset with your cellphone. Choose the headset, and then at the next page, choose your phone. Moving your mouse over each step will change the picture to what you should be seeing on your phone at each step.
http://jabra.pairx.co.uk/ Pls come back and let us know if this solved your problem.

Password is 0000.

Make sure the Jabra headset is set to pairing mode, otherwise the phone cannot find the headset. The manual should have instructions to set the headset in pairing mode. While the headset is in pairing mode, have the G1 search for the headset (Settings > Wireless Controls > Bluetooth Settings). When it finds the headset select it and type 0000 for the PIN code.

You can buy a 5 pack here:
http://www.shop.jabra.com/jabra/Shop?Dsp=30007&PCR=1:401&actn=addkeycodetocart&keycode=5JABRAST400

I had the same problem and found the user: Splut wrote in another problem the following solution: If you hold down the button, it will turn the light blue, keep holding it till you can connect it. It will come up as Jabra BT125, hit connect. Then it will ask for a password. The password is 0000. I tried that to connect my Blackberry phone to my Jabra BT2010 headset and it worked!! I had tried everything prior without success. I hope this works for you. DIVA08

to connection to your phone or device
turn off your jabra then press and hold the big white button until the light stay on the search for your device

First u switch off the Jabra Headset..
then switch ON the Bluetooth in ur Cell.
then search for active devices in your cell..
while searching switch ON the bluetooth Headset.press and hold it continuous until the light is on.
you must hold it for approx 15 sec..
then the jabra wil be displayed in your cellphone....
tats it....add it....
enjoy,,