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For future reference: I did get the custom firmware to successfully install on xp15000 without cartridges (maintenance error). I repeated the steps i had taken previously, i.e. booting xp15000 into software update mode with key the combination (down + left + stop + power) and pushing the firmware via provided chipless updater. This time i did shut down the printer by pressing the "ok" button after the firmware had finished transferring/writing, which I assume i hadn't done previously. The printer successfully updated to NW07K7 (verified via wicreset utility). License.exe still didn't show serial or id code upon selecting the printer from the dropdown, but upon clicking on "Activate online", the ids show properly. Thanks for the support

Thank you. Now I see the firmware version mismatch, i wrongly assumed the firmware write was successful. I will first get some cartridges with chips and try to push the chipless firmware with the printer in normal mode. Thereafter, in case, i would move on to your proposed method. Thank you for now.

Hi, I have an epson xp 15000 with a serial starting with "X46T" on which i want to activate the chipless firmware from chiplessolutions. This is about cartridge chips, not about the waste tank or maintenance tank. The printer has no cartridges inserted, and i have none at hand. It is stuck in "maintenance error" in display navigation. I did manage to flash the new firmware "XP15000_FWG150TL_NW07K7_NW99Z9" by having the printer in software update mode. The transfer of the firmware completed without error, and the printer reported successful flash and produced two checksums on its display. The firmware version is now "NW14L4 14/04/2021". Now here is the problem: I cannot read out the serial via license.exe tool. The tool lists the printer in the dropdown (USB001), but upon selecting it, i get no readout in the "printer's id" field. However, wic reset utility v5.97 does manage to read the printers serial and firmware (that's how i got the info i posted). I tried it both on windows 11 and windows 10 (the latter in a fresh live usb environment), both with printer driver "epson674969eu". Also i tried deactivating epson services before trying to connect with license.exe. Also i later tried tweaking some usb communication drivers without success. How can i proceed with the firmware activation? Can I use wic reset utility to retrieve the full serial, use this serial to get a key form chiplesssolutions and then send this key to the printer using wic reset utility again? I understand "wic reset" is part of the same ecosystem as chiplesssolutions, so are keys and firmware fully compatible? Or alternatively, would i have to reflash with a different wic reset firmware and get my activation key over the "wic reset" branch? Is there a fix on windows, e.g. a driver package that works more reliably? Thanks and best regards!