ReadyNAS NV+ Kernal Panic

Trying to determine if it's possible to recover from a Kernal Panic situation on the following unit and, if so, get guidance on how to proceed:

• ReadyNAS NV+ [X-RAID]
• Firmware: RAIDiator 4.1.14
• 4 x 2TB

I have reviewed multiple threads on similar issues and, as a result, can report the following:

Initial behavior when problem was first noted (all disks in):

• All LEDs solid green, including Activity
• Kernal Panic message
• No access to RAIDar admin web interface
• No response to power button
• Memory test OK

Disk 1 removed (with power off) - first time:

• No access to RAIDar admin web interface
• No response to power button

Disk 2 removed (power off, Disk 1 replaced):

• All LEDs dark, except intermittent Activity LED
• Access to RAIDar admin web interface
• Volume C:    Offline, RAID Level , disks, 0% of 0 MB used
• Health metrics all green
• Logs indicate Disk 3 failing (7440 reallocated sectors, up from 704 a week earlier, and 0 a month earlier) [No need to beat me up about this - I know I should have been monitoring the logs and addressed this sooner]
• Nothing else abnormal in logs
• Power off feature within admin tool does not work
• No response to power button
• Above behavior was recorded the 1st time I tried it. Second time around, after checking each disk systematically, I could no longer access the RAIDar interface.

Disk 3 removed (power off, Disk 2 replaced) - First time:

• All LEDs dark, except intermittent Activity LED
• Access to RAIDar admin web interface
• Volume C:    Offline, RAID Level , disks, 0% of 0 MB used
• Health metrics all green
• Power off feature within admin tool does not work
• No response to power button
• Above behavior was recorded the 1st time I tried it. Second time around, after checking each disk systematically, I could no longer access the RAIDar interface.

Disk 3 removed - Second & subsequent bootups:

• All LEDs dark, except intermittent Activity LED
• Hangs with message "Booting...."
• No access to RAIDar admin web interface
• No response to power button

Disk 4 removed (power off, Disk 3 replaced):

• All LEDs dark, including Activity
• Kernal Panic message
• No response to power button

Seatools Testing (on Windows PC):

• Short Drive Self Test - all pass
• Long Generic - Disks 1, 2 & 4 Pass; Disk 3 Fail

Power down, all disks removed & numbered, known good spare disk installed in bay#1:

• Drive LEDs alternating between all 4 flashing, and first 2 flashing
• Message: "Booting...ERR: Bad firmwar"

I do have a second ReadyNAS NV+ that I use to back up the first one, but the most recent backup is about 6 months old. As a result, restoring from the backup is a worst-case option - if there's a way to restore operation using the primary disk contents, that's what I want to do.

 

Thanks in advanced for any help.