IrvingFael 0 Report post Posted October 4, 2020 Hi, I did buy a C5710 recently. I already have five of the same printer and no problem converting it to chipless. But with this one I am having problems. I follow the instructions of https://www.2manuals.com/product_info.php?cPath=107&products_id=1940 about uploading firmware I verify because of "If firmware version is CU26I9 - firmware has been uploaded successfully" part with the WIC Utility and everything is good, version number is CU26I9. Now the Activation Key I already did buy and downloaded the Licence.exe app, I press Activate Online, paste the emailed code and the App shows Error writing... I have reinstalled the firmware about three times, verified the instructions everytime. Verified the FW version. Share this post Link to post Share on other sites
John_Admin 388 Report post Posted October 5, 2020 Try once more time please Share this post Link to post Share on other sites
IrvingFael 0 Report post Posted October 5, 2020 Hi, I tried again from the start, Transfer firmware by normal mode, open WIC Utility, Stopped all epson running apps, check firmware version, it is CU26I9, open licence.exe, pressed Activate Online, paste Key copied from mail, "Activation code writing is failed - 3" message received again. Share this post Link to post Share on other sites
IrvingFael 0 Report post Posted October 6, 2020 Is there another thing to do?, the actual chip of the cartridges are getting low and I will need to buy ink, it is expensive. I have chipless cartridges ready to be installed. Share this post Link to post Share on other sites
John_Admin 388 Report post Posted October 7, 2020 PLEASE DO THIS ONE MORE TIME: Upload Firmware to printer in the NORMAL MODE (do NOT use service mode yet just start the printer with the power button). Run EPFWUPD.EXE file and follow all steps until Firmware will upload in printer. When Firmware Update process is complete - printer will restart - usually it will take only a few minutes but can continue for 10-20 minutes in some rare cases. If process hangs - replug power cable and start printer manually.Now check current firmware version ( how to check ).If firmware version is CS26I9 - firmware has been uploaded successfully. Run License.exe utility and use your Activation Key Share this post Link to post Share on other sites
IrvingFael 0 Report post Posted October 7, 2020 This time it worked. Thanks for your help. =) Share this post Link to post Share on other sites