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Forum Discussion
ReadyNAS Pro 6 USB recovery issue
Hi ! I have a Pro 6 currently running 6.10.4 I would like to downgrade it to 4.2.x to flash the latest Bios. I know it would be possible to run flashrom directly in OS6 (tough some users said flash...
Did you make sure to use the MBR partitioning scheme and e.g. the FAT32 filesystem? Note that the USB key needs to have a partition table with a single partition. The boot recovery files need to be on that partition. Another common mistake is not to have any partition table or partition which will mean that when the boot recovery script looks for that partition it won't be able to find it.
The firmware image has no extension. Their are arguments both ways. OS6 firmware images have an extension .img, but that extension is also used in other settings for disk image files, which the firmware image is not.
The downgrade image is here: https://community.netgear.com/t5/ReadyNAS-Storage-Apps-Current/Downgrade-to-RAIDiator-x86-from-ReadyNAS-OS-notsupported/td-p/859412
Yes, the sticks are formatted FAT32 with a single, active partition (99.9% of the sticks report to Windows as "Removable Media" and unlike "Fixed Disk" it only supports 1 partition. I did one more try with the stick which was booting plugged in one of the 2 USB ports in the back (instead of the front). This time I noticed on the lan card a green led blinking (did not see it before) and now Raidar reports still 6.10.4 but with the EEPROM corruption "To be filled by O.E.M" and serial NONE00000000"
While it's too late now, USB recovery is not the best way to switch back to OS4.2.x. You just do an "update" with a 4.2.x image doctored to look like an OS6 update (like V8.0).
When you go backwards, just as going forward from 4.2.x to 6.x, a factory default is required. For that reason, it's best to do the whole process with a scratch drive if it's only temporary. Then, you can just put back in the original drives when it's back to 6.x.
Unfortunately, OS4.2.x doesn't show all the information on the display as 6.0 does. In fact, you typically only see what you are seeing. So all you need may be the factory default. Of course, that will wipe the contents of the drives, so use a spare one if you need what's on the normal ones.
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