What specific My Cloud device do you have?
Use the site search feature (magnifying glass icon top right) and search for “unbrick” to see if there are directions for restoring the firmware to your device.
Kind of difficult to manually update the firmware if one has deleted the Dashboard by deleting the WWW folder. It may depend on one’s My Cloud model (which is why I asked the OP what model they had). For a second gen single bay My Cloud user they might have to use the USB boot method detailed in user Fox_Exe’s old directions to boot into a screen that allows one to manually upload a firmware file: https://wd.hides.su/fox_exe/WDMyCloud-Gen2/_Unbricking_en.txt
I guess is MyCloud-Gen1or2, I am not very sure about that. Are they look same?
It should be a device around 2014 and I got it last year from my friend.
Between I get it to 2023 I never try to download any apps or sign up a account of wd to use it. I tried but always response timed out. I found a post on another bbs about how to connet it through Windows file manager. It work well, so I didnt spend any more time on it.
Recently when I want to access the dashbored I found that it isnt the original one but another web that can’t use (It used to work well before). the original one is still there before I delete them, So I try to deal it and get the original one back(since now it’s a bad dicision to did it without a backup.TT) then I search about it and finally found there and I just sign up just to ask for help.
it’s quiet difficult for me to find something actually useful information, because I cant read or spell well
If you have the following device, a My Cloud Home, it is a completely different device than the My Cloud line of devices and does not use OS3 or OS5 firmware. You cannot use the methods to unbrick a My Cloud device on a My Cloud Home device.