Updated my ROM on 6700 today (with the same one that's been around for a bit) - called Sprint CS to get my MSL etc in the event that I had the EVDO problem, and they sent me an email with the following instructions for updating the ROM:

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1. Go to Sprint Downloads Website (http://www.sprint.com/downloads)

2. Select "Windows CE" from the "Select your operating system" field and click the "Submit" button

3. Click "Download" to the right of the "PPC 6700 Upgrade Application" link

4. If prompted, select "Save" and place the download file on the computer's desktop

5. Simultaneously hold down on the Power button (top-left on the device), Memo Record button (icon of cassette tape at the top of the left-side), and insert the stylus in to the Reset hole (bottom-left). The device display will show "Serial" at the top of the screen. This will change to "USB" when the device is connected to the USB cable (next step). IF THIS STEP IS NOT FOLLOWED, THE UPGRADE WILL FAIL!

6. Connect the device to the laptop/desktop using the USB cable originally included with the PPC-6700

7. Click the downloaded file "APAC_SPCS_20600_300_11200_ship.exe" to begin the installation

8. Follow the installation wizard prompts

The upgrade procedure takes approximately 20 minutes.

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I hadn't seen the bit about pressing the power & memo and reset keys to put it in that mode anywhere else, so I thought I'd let y'all know. Update worked fine for me and I didn't need to use my MSL/MSID after all.