If u guys encounter error while trying to route from sabah to sarawak or vice-versa, crossing Brunei, u can try use the map i prepared here. Optimised based on my own experience whichever I can remember.
Ready to use gmapsupp (with custom polygons) download link
https://www.rapidshare.com/files/3857390359/Shideen_Borneo_Gmapsupp.rar
Perfect for GMXT/mobile phone & old devices, dumb-dumb-no-fun version, just pure road & poi without colourful polygons;
https://www.rapidshare.com/files/3406152590/Shideen_Borneo_Basic.rar
For installation to view in mapsource, follow this instruction;
1-download package here
https://www.rapidshare.com/files/1165334211/Shideen_Borneo_Mapsource.rar
2-Unpack the whole folder to c:\ drive (u shud get 1 folder named "shideen borneo")
3-inside the folder, run the registry entry file (shideen Borneo.reg) to insert the mapset into mapsource.
4-open mapsource now, u should be able to view the map.
Note: to uninstall, use mapsettoolkit - remove it from registry then delete the folder. It can be downloaded here http://sites.google.com/site/cypherman1/
Limitations:
1-POI may not be as many as full map (except Sabah), but should be enough for long distance Trans-Borneo driving. I only interested in hotels, fuel station, hospitals, police stn & well-known local eating places only. I am adding up this from time to time.
2-no custom POI icons (except some).
Updates;
15-11-2010 - added POI & streetnames details in Brunei, Bintulu & Kuching.
02-12-2010 - added more POIs and more details.
21-12-2010 - just came back from holiday in Kuching, dropped by Kanowit,Betong,Sarikei,Sibu,Tatau,Bintulu & Brunei. Expect updates in those towns
30-12-2010 - split map brunei,sabah,sarawak to resolve cgpsmapper mdr (global indexing) bug between brunei & sarawak & sabah.
10-01-2011 - added basic version
01-03-2011 - more roads & POI added
02-04-2011 - more roads & POI + polygons added. Improved addresses in metro area such as Kuching,KK & Brunei, eg: a road in Penampang (a part of KK) can either be search via city KK or penampang, Petrajaya or Matang in kuching. Also included the cities within a division in Sabah & Sarawak, eg. u can search a road in Nabalu in district of Ranau, by entering "city" Ranau or Nabalu, works both ways. Same thing with POI.
Disclaimer:
This is homemade personal gpsmap, based on personal experience travelling sabah-sarawak.
Although tested to work ok, but I bear no responsibility if it cause you trouble. Usual word - use at your own risk.
Note: This map was generated using licenced personal version of cgpsmapper
-edited & updated 14-07-2011-