After upgrade firmware my WD cloud dont work

[Bennor]

@candrej29

@cat0w

P/N: WDBCTLxxxxxxx- 10

Hi. I have this WD
WD My Cloud Home: Best Cloud Storage for Photos (2 TB - 8 TB) | Western Digital
my P/N: WDBCTLxxxxxxx-10.
It have firmware version 2.x. But automatically upgrade installed version 4.x
The problem is, I do not see the cloud from any device.
The blue diode flashes but nothing happens.
How to change firmware from version 4.x to 2.x?
Need more information?

How do you know your v2.x firmware My Cloud upgraded to v4.x? V4.x IS NOT newer than v2.x firmware. The v4.x firmware is used on OLDER first generation single bay My Cloud P/N that ends with “-00”. Generally you cannot manually flash the v4.x firmware to v2.x My Clouds. One typically receives an error when they attempt to perform the flash and the user is returned to the My Cloud Dashboard.

I think there are a few other threads here that discuss the single bay second generation My Cloud stopped functioning after the very latest firmware upgrade.

My Cloud recent firmware update Rapid Flash Blue light and gone from network (Gen 2)

I started the recent update it got to 100% and that is the last I saw of the device. Its now entirely gone from my network with a rapid flashing blue light. I let it sit more than 24 hours and it was still in the same mode. I tried the 40 second hard reset and its still in the same mode. Is the firmware corrupted? Is there a way to reinstall the firmware without GUI interface? or does it need a new controller board? I searched around, but I cant find specifics to not having GUI access or firmwar…