New Release - My Cloud Firmware Version 2.40.155 (07/29/2020)

WD is happy to announce the release of My Cloud Firmware 2.40.155 for manual download at https://support.wdc.com for the following My Cloud products.

  • My Cloud Mirror Gen2

  • My Cloud EX2 Ultra

  • My Cloud EX4100

  • My Cloud PR2100

  • My Cloud PR4100

What’s new!

For EX2 Ultra, EX4100, My Cloud Mirror Gen2

  • Updated Privacy Statement
  • Resolved Escalation of Privileges Vulnerability (CVE-2019-18929, CVE-2019-18930, CVE-2019-18931)

For PR2100/4100

  • Updated Privacy Statement
  • Resolved Escalation of Privileges Vulnerability (CVE-2019-18929, CVE-2019-18930, CVE-2019-18931)
  • Resolved issue where device will not complete reboot process

Notable KBA:

Answer ID 25490 My Cloud Firmware Up To Date but Newer Version Available for Download

Answer ID 23501 My Cloud Remains on “Firmware Updating” Message or Not Available After a Firmware Update

This firmware update did not do as it was suppose to, my NAS has been locked for 2 days now with no access to it in any way. no support has been able to help resolve the issue, I would advise any person using a PR4100 to avoid this update.

After firmware update my PR2100 is locked. Power button LED is blinking blue, there’s no access to it in any way. I tried to boot it from USB, no success.

Same issue - This frimware bricked the PR4100 - 4 sec or 40 sec reset does not work - totally bricked - have tried everything read in loads of forums and cant get the thing to boot up totally- stuck on welcome screen. blue light on power flashing. fan running, cant connect to dashbord - cant see on network because it wont fully boot, had it running overnight like this.