I have a “WDMyCloudDL4100”. I’ve followed the steps found on both links
I’ve made sure to update my firmware first to 2.41.116
After reboot, I then clicked on the alert to upgrade to “My Cloud OS 5”
The screen shows the FW downloading.
However, when it gets to the “Upgrading” status, it hangs on “(-1%)”
I then downloaded the OS 5 FW
Version: Firmware Release 5.15.106 (7/13/2021)
and manually attempted to apply.
Webpage shows it “downloading” from my desktop.
When it attempts to Update, it fails with “Upload firmware failed. Try again.”
I have just experienced exactly the same problem as Bruce. Same model same problem. The upgrade firmware version showing in my dashboard is only 5.14.105 but I get the -1% hang and Firmware Update Failed displayed on the DL4100.
Will the firmware upgrade automatically from 5.11 to the latest 5.14/5.15 after a manual update using your link?