Linkstation Duo unresponsive after power outage

[tcxz]

Hello

We have a Linkstation Duo LS520D that has become unresponsive after some power outages. It was probably not shut down properly before some electrical work in the building with a number of power supply on/off events occurring.

Status lights seem normal with flashing white on boot, solid white once booted. It does report at IP address 192.168.0.9 which is not the same as its static one previously assigned nor is that IP in the DHCP range of router that assigns dynamic IP addresses. It will not show up in NAS Navigator or web browser nor respond to FTP connections. It only responds to ping and to IP scanner software.

We did do a reset using the function button on boot up, it did go to flashing amber as is normal, then eventually flashing white and solid white status LED. But not change in behaviour. Then same IP as before at 192.168.0.9, it does not take a DHCP assigned one as is supposed to happen after reset.

I suspect the device is bricked. We did check data is readable using UFS Explorer which reads the XFS file system. Files/folders all seem to be all intact.

Any advice on how to proceed - can the device be unbricked by any method? Did think maybe a firmware update but need network responsiveness for that.

Otherwise data recovery only option. No free software seems to be available. Some cheapish Windows commercial packages see compelling (Disk Internals). Linux OS versions which claim XFS support such as Puppy and CentOS have been tried but proven useless so far.

Any advice appreciated.

[1000001101000]

192.168.0.9 appears to be the default IP in the boot loader for that model. It might be reaching out to 192.168.0.200 for TFTP recovery or something. I'd try setting up a pc with that address and see if it shows up in NAS Navigator, maybe take a look with wireshark if not.

[tcxz]

In the end it was decided that last backup was good enough and to rebuild the old LS220D box which worked but had failing disks using the disks from LS520D which had OK disks but corrupt firmware.

That has worked OK, Raid 1 rebuilt but now after disk checking each disk but the box is sluggish, no errors reporting in web interface or NAS Navigator. Sometime data transfer rates slow to 3 MB/s sometimes can be up to 20 MB/s.

Any way to speed this rebuilt LS220S box up?