How to pair bluetooth on mexbt2600 the manuel says hold bt button untill it flashes but this one comes straight on and doesnt flash so my phone cant find the device?

I am assuming you are trying to pair iSound BT200.
See Page 6&8 of the ISOUND BT 200 User Manual

During the first time set-up, you must hold the
power/phone button down until you hear a voice say
"Power on" then followed by "Ready for pairing" in order
to sync your device to Bluetooth. After the initial pairing,
you can let go of the power/phone button after you hear
"Power on".

When a user is connected and the BT-200 is o , press ff
and hold for at least 5 seconds to unpair on Bluetooth
(allow another user to connect)

Also check the
Kenwood DDX616 Instruction Manual Bluetooth Unit Connection Bluetooth...

Kenwood DDX6019 Service Manual

Go to settings, General, blue tooth and remove any "other" previous paired BT devices & Turn off BT, then go to Sett. General, scroll down to reset and reset network settings, this will not delete anything. Power off BT speaker. after iPad re-boots turn on BT Speaker First, make sure BT is off on iPad as well as WIFI-wait like 10-15 seconds and then turn BT on in iPad it should see your speaker now and let you pair it up.

First, make sure the device is charged and turned off. Hold the power button down until the LED flashes red and blue. The phone will then be in pairing mode.

Easy!

1.) Turn off Stereo with the upper left button.
2.) Press and hold the EQ button just below it. the BT symbol will turn off, keep holding it, it will turn on, and then flash. when it flashes it is in pairing mode.
3.) go to connections/ Bluetooth on your phone and search for it. it will show up as XPLOD.
4.) the pairing code is "0000" enter and it will tell you connected xplod

to listen to music make sure it is in BT Audio, Also call quality is not that great, but it is an awesome unit to listen to some slacker/pandora over Bluetooth!!

You need to pair your phone with your bluetooth headset.

1. Turn on your phone's bluetooth and search for bluetooth devices.
2. While the phoneis searching and the BT headset is off, press and hold the call/end button on the bluetooth headset until it's light glows steadily. Do not let go until the phone finds it.
3. Pair the devices and allow the BT headset to connect automatically.
4. To connect, press and hold call/end button on BT headset like the one in step 2.

Booklet instructions for how to pair it with a new device are wrong. It tells you holding the power button will put it into pairing mode but it does not.
Pairing mode is done by turning off the ear piece, then holding both power and answer/hangup at the same time. The LED should flash fast 3 or 4 times and then stay on solid. You might need to hold just power till the very first flash THEN begin holding answer/hangup as well as power till the LED goes constant. I’ve also had luck when frustrated by just holding all 4 buttons at once.

I managed to pair the device after plugging the bluetooth headset into the USB power slot. Then I press the main button for 5 secs until the red light started flashing very rapidly and I typed in 0000 and the headset paired off with my Iphone. Good luck

The mamual says to hold the - and + volume keys at the same time for approx. 2 seconds till the light starts to flash green and red. The pairing code is 1234

hey
the pass code for BT-020C is 1234

here the steps, first you have to open your BT to pairing mode by close your boom and hold the button untill the indicator light show(not flashing), when u see the light DO NOT release the button, open your boom the you can release the button after that open your phone bluetooth then choose search for device there should be your BT(HS810) on the list then pair it.