[nando4]

INFO: Adding a MC8780/MC8781 3G/HSPDA WWAN card with GPS

The steps below show how to successfully add a MC8780/MC8781 to a 2530P. This provides mobile internet on the go without needing a USB dongle. Turning on the radio and using the WWAN card sees a > 2W power load so expect battery life to decrease while in use. I disable the USB port the WWAN card is attached on when not in use to maximize battery life.

1. Flash the unwhitelisted 2530P modded_bios. Without that will otherwise get 104 - Unsupported WWAN device error, limiting you to only using the HP certified WWAN cards.
   
   
2. Purchase an unlocked MC8780/MC8781 from ebay for < US$30-delivered. MC8781=US, MC8780=Asia/Europe/Oceania. I chose the MC8780 over the Gobi-2000 (UN2400) because it was cheaper and I prefer the simpler Sierra Watcher interface. The Gobi-2000 appears to not have a generic connection manager so would need to use Lenovo's software to connect.
   
   
3. Put cellophane tape over the MC878*'s pin20, 42 and 44 as shown then install in the WWAN slot with antennas attached. If don't cellophane pin20 then the card will not be detected. If don't cellphane pins 42+44 then the wifi will intermittently drop out when the WWAN card is installed.
   
   
4. Install 3G SIM from your preferred internet provider in your 2530P's SIM card slot.
   
   
5. Install Sierra Watcher software. MC8781=Aircard 881U, MC8780=Aircard 880U
   
   
6. Enjoy your 3G and GPS functionality as demonstrated by my 2530P+MC8780 screenshot below.
   
   
7. Optional: create a shortcut using devcon to disable/enable the USB port the MC8780 is using to quickly disable/enable it.