Postcode problems TomTom One V3

Hi guys, I'm having a few problems with an old Tom Tom One V3. I've managed to get the navcore and a map pack working OK but I can't seem to get the postcode search working. It shows the first part of the postcode in the search but won't go past the first 4 digits. Any ideas?
I've copied the unzipped postcode files to the root directory of the TT but no joy.

Here's my current setup:
ttgo.bif:
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v6)
DeviceSerialNumber=Y4xxxxxxxxxx
BootLoaderVersion=10012
ApplicationVersionVersionNumber=9510
ApplicationVersion=1234792.1
CurrentMap=United_Kingdom_and_Republic_of_Ireland_920_5267
CurrentMapVersion=920.5267

Map(s):
e:\United_Kingdom_and_Republic_of_Ireland_920_5267\

Storage:
Size 488MB, Free 162MB

Any help will be much appreciated. Sorry if this has already been discussed somewhere, I had a search around but couldn't find anything.

The two GB postcode files should be in a directory called "Zip"

E:\Zip\{postcode files}

Holy crap, something so simple has had me pulling my hair out all day. Many many thanks

No worries, if there's nothing else this thread will be marked as solved and closed shortly...

PoisonMonkey wrote:I've copied the unzipped postcode files to the root directory of the TT but no joy.

FFR, current Postcodes WITH INSTRUCTIONS are always available in post 1 of All New Maps XXX.XXXX, Latest Europe TRUCK Map, V8 & V9 Navcores and also post 2 of XXX Map Collections Only!!