Faulty Linkstation with red light flashing

[chupacabraGT]

Hello all, I have 2 faulty Buffalo LinkStations; in both of them red light is flashing. I heard that reinstalling firmware could fix both of them.
I tried instructions from the website, but neither of the drives are showing in the NAS Navigator2
Is there a way to update the firmware some other way, perhaps by using an USB pendrive?
Also, is there a way to recover the data from one of the hard drives (1 of the 2 is faulty) without Buffalo NAS case?
One enclosure is LS220D0402-EU
The other one is LS-WXL: LS-WXL/R1
The first one came with 2x Toshiba DT01SACA200. One of them is faulty, making a lot of noise, but I'm hoping to recover the data from the second drive (from RAID 0), but the enclosure is not showing in NAS Navigator2 (both with and without HDDs inside) and there is a red light flashing.
I tried to use another Buffalo NAS enclosure  which I found but it has the same issue as the first one
I tried connecting them to different power sources and independently to the Virgin Media Router - each time the same thing happens; red light blink 7 times (on both) which I think indicates "Problem with the RAM, Ethernet Controller, or IDE Host Controller."
Any advice would be much appreciated