"download all log files" killed pre-netgear NV

I use a pre-netgear NV @ home. Running RAIDiator 4.1.7, I think. The latest that will run on that machine. It has 4 250GB drives in it. Using X-RAID, so about 650GB of space, which is nearly full - about 6.5GB free. Wanting to expand, I looked around for the max size of HDDs I could use in it. I saw some instructions for figuring out the block size by downloading all logs, so I naïvely clicked the "download all logs" link. It became unresponsive, I forced a shutdown by holding the power button in, and now my poor NV is afflicted with the typical symptoms: it will boot up, the drive lights all go solid green, the power button slow-flashes (about 2/sec) while the activity light goes crazy. After several hours (I think, mebbe 1 hour? I haven't sat around watching it), the activity light goes quiescent and the power light continues its slow blink of doom. If I have RAIDar running during bootup, it can find the NV and show its status, and for some short period of time (10 minutes? half hour? not sure) after boot up, RAIDar's Locate button will cause the drive lights to flash.

The NV will always respond to pings and ports 2049 and 4096 are open.

From what I've read in the forums here, this is not a unique situation, and I see mentions of "debug mode" and "OS reinstall" as potential paths to solutions. Can someone point me at how-tos for either of those?

Thanks,

-Peter