Hi,
I bought the WF-C5290 key and tried to follow the step you give ,
when activation online it showed reading failed - 1, I download the new firmware which you provide for other person who have same problem.
However, when I try to run the new firmware, it can not detect the printer unless I turn on the printer (with usual power bottom), when the printer is on it showed can not updated.
What should I do in this stage?
If you provide the new firmware link for me to download, when install the new firmware, should I turn on the printer or not?
Thank you.