I've successfuly paired BT kb wit N800 thanks to instructions in this forum, but have problems in connecting back to N800 after not using KB for a while, I guess it times out. What a proper way to reconnect.
I press CTL - blue FN - green FN at the same time until
light at top of the keyboard start blinking.
I to go into control panel - Bluetooth - make sure that BT is on and visible - device and select Stowaway
press connect - get message connection failed.
What I'm doing wrong?

Once you've paired it correctly you just need to press a key on the bluetooth keyboard. The bluetooth keyboard will then do the work of finding your n800 etc. You shouldn't need to go into control panel and press connect.

It does seem that sometimes it won't re-connect. These are my quick guide steps from input from others and my own edits (so mainly thanks to others in this case)

Connect igo keyboard to N810
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1. Open Control Panel on the N810

2. (Optional I think) Double click 'Bluetooth keyboard', select 'Generic 105-key PC' and OK

3. Back in Control Panel double click 'Bluetooth' under connectivity

4. Make sure 'Bluetooth on' and 'Visible' are checked

5. Click on Button 'Devices'

6. On the Igo keyboard hold down the left CNTRL KEY, the BLUE fn key and the GREEN fn key at the same time. (A GREEN LED above the T key will begin to flash).

7. Select the 'Think Outside Keyboard'

8. Select 'Edit'

9. Select 'Connect'

If it will not connect you need to reinitiate the pairing as follows:

1. Select the 'Think Outside Keyboard' and 'Delete' under Bluetooth devices. Confirm with 'OK'

2. On the Igo keyboard hold down the left CNTRL KEY, the BLUE fn key and the GREEN fn key

3. Select 'New' and the N810 will find the Think Outside Keyboard

4. Select 'OK' and note the four digit PASSCODE number. (Set as trusted should be checked)

5.Select 'OK'and immediately enter the PASSCODE number on the keyboard (hold BLUE Fn, enter number and press Enter)

The Keyboard will then be paired. Close Control panel.

Thanks, this did the reconnection trick

Is there a default 4 digit pairing code used by this igo BT keyboard? I just purchased a used device (without setup guides manual), and I can't get passed the request for the 4 digit code. Most of my other BT devices use "0000" as their default. I don't have the igo user manual or setup guide. Any suggestions? Thanks!

No, there is no default to avoid it conflcts with neighbouring devices. make sure you press the Fn button for the number row then enter.