[Dash 3G, Snap ROM Development] Letitride:
3488 - if you can get into the bootloader screen and it's reading SPL 0.39.Hard - you should be able to reset/restart & try flashing the ROM again. Just chill, calm down & take a few deep breath (and, keep that dog away from your room & as far away from your pc & usb cable as possible, seriously - I had have my share of accidents, spills & dropped items over time, know that awkward feeling)

Please take time to read the sticky/post about how to unbrick the Maple/Snap ROM (since there isn't one specifically written for the Cedar, unless I missed it myself) - it will give you a good idea of what to do & not to do, steps to be taken & tools needed/things to do, etc. Sip your coffee next & put that away safely before doing the recovery, one step at a time.

A few general steps like, making sure your Sim card & SD card has been removed, pulling the battery out for 15 secs. or so before putting it back in and rebooting the phone while watching for any screen prompts or messages. And, you might want to do this on a different computer that never sync. with the Ozone before so that you get to start a new ActiveSync connection, disabling it while being connected might be impossible, but you might be able to get it to install all the HTC drivers & to recognize the device, and to get into the bootloader mode - be patient, and, listen for those noises, clicks & stuffs happening to the phone as you are looking at a blank or black screen for the most part.

If it looked like nothing was happening, go into your Control Panel/System Properties/Device Manager - then under USB to see if the "HTC USB" sync. devices are recognized, loaded & running - and if so, give it time to find & configure everything as needed. You are supposed to click on the phone's trackball to continue as well as hitting the "Enter" key on the PC while these prompts are showing up onscreen - all part of the documented steps in the guides written. Along the way, it will ask "Do you have usb connectivity" Press any key - Start Rom Update Utility ....

Lastly, make sure the ROM file (*.rar) is unpacked to the same folder as the Rom Update Utility sub "Folder" as it became a *.NBH file at around 80 MB.

Mine was running the original WM6.5 as updated via HTC's indirect link from VZW with SPL *.44. - but I was able to go back to *.39. and Rom from 2.16.605.15 to 3VO.2.00.122209

Patience & time - the worst (well, almost - the dog could've chew up the phone) already happened, it can only get better from here - stay calm & perhaps the magic will make do wonders with more careful preparation.

At some point, if you are lucky & successful, the phone will reconnect & get re-detected, and it will bring up the HTC Rom Update Utility - and at that point, you should be good to go - flash the original Rom (I believe you can download the 6.1 HTC upgrade via the VZW link or the custom Rom cooked here. The actual flashing took less than 5 minutes and on the inital boot, it took another 5 to 10 minutes to prepare & finalize the setup - and after that, it's sweat & honey and all - loving mine & enjoying it.

P.S. Keep the kids away along with the dog/cat, etc. etc. until the job is done. Good luck. Do post any results or messages as you try to unbrik & recover this phone ....