I purchased a key today, and tried following the steps:
I've tried flashing the WFC5710_FWG239TL_ZZ99Z9.zip firmware using the original instructions (power off, 4+7+Job/Status), as well as the revised instructions to run it under normal mode.
Results: Firmware update mode: Enters mode just fine, displays white text. Says "PRINTER UPDATE MODE", then "CU06" in middle of screen. Upload proceeds, then finishes with "FINISHED, ROM VERSION 16.54.CU26I9, ROM1 FIXSUM D528 , ROM2 FIXSUM 6C60". After this, all lights flash at about 1 second intervals, but unlike guide, pressing the center of the LCD (or anywhere else or any other button) doesn't reboot the printer. I have to pull the plug at this point or pressing the 0 button .
Running NoInks updater at this point fails with a message like this " ".
Trying again with the printer in normal mode, firmware uploads, printer reboots by approx 30-40% on the progress bar. If I let the normal mode firmware updater run all the way to 100%, it finally fails with a message about "firmware not installed" (your printer isn't content check USB cable, WiFi or something like that.)
Any ideas to solve my problem ?
Any help would be appreciated.