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Hi! Unfortunately, there is no solution for the WF7820 on our website.

Hi! You should install the chipless firmware in NORMAL mode instead of UPDATE mode. Please read the instruction from our website carefully: https://inkchip.net/download/INKCHIP Instruction Method 14 (for 99 firmware).pdf Also, please watch the video guide from our official YouTube channel: https://youtu.be/oF0DsDVPT7k

Hi! In order for the WIC utility to work properly, you will need to install the Microsoft C++ x64 and x86 packages. It is a special extension that the program works with. You will receive a link to install the packages in your email after your order. Be warned!!! Do not use the WIC key until you are sure that the packages are installed and the program works correctly. This may cause the key to break.

Hello! It usually takes 15 minutes.

La clave que está utilizando no es compatible con este modelo.

Hello! Tell us ,please,what mode did your install firmware in?Normal or updated?

Hello! Yes, it will. Our firmware is designed to work with any kind of cartridges!

Make sure you used a usb cable when installing the firmware and have a stable internet.You need to activate yhe progtamm to get rid of this error.

You have to put the key (not serial number) in the pop up window after the clicking on the activation online button. Please,watch the video instruction attentively and follow all the steps. https://youtu.be/oF0DsDVPT7k YouTube (https://youtu.be/oF0DsDVPT7k)

Firmware is solution for cartridges.If you want to solve problem with maintance box you need another our solution-WIC utility.

Please,send a screenshot.

What solution did you buy?If it is WIC utility,you have to install Microsoft packages which were in the instruction.

Hi! You received the firmware download file in another email. Please check your inbox.

Please watch the video guide from our official YouTube channel: In the video guide it shows that you don't need it to load 100%. When the load gets stuck at 75-85%, that's okay! You will need to pull the cable out at that point and put it back in. Then turn the printer on just using the power button. You are inserting the key in the wrong place. You need to click the "activate online" button and insert the key in the pop-up window.

Hi! Please tell me your printer model. What mode did you install the firmware in? Normal Mode or Update Mode? Try to install the firmware in Normal Mode.

Hi! Can you send a screenshot to the technical support email: info@inkchip.net? Also include your order number. The error means that the key has already been used.

Hi! The error occurs if you insert the key incompletely, incorrectly, or leaving extra spaces in front and behind the activation key.

¡Hola! Intenta usar un cable usb diferente. ¿Ve su ordenador la impresora en el menú "dispositivos e impresoras"?

You are getting this error because this firmware needs to be installed in normal mode and not in update mode. Please try this new file for you. https://inkchip.net/download/INKCHIP.net_Firmware_99_WF4790_v1.rar 1) Upload firmware which I sent 2) Switch on in normal mode(!!!!) just turn on button . - dont put printer in Program Update mode. (no need to press few buttons while turn on the printer) The uploading process will stuck at 70-80% - it is ok! Open task manager and stop updater process. Printer will blink for about 5-15 minutes - then will power OFF. Now power on the printer - chipless firmware is installed in your printer!

Hi! Please try this new file for you. https://inkchip.net/download/INKCHIP.net_Firmware_99_XP3100_v1.rar 1) Upload firmware which I sent 2) Switch on in normal mode(!!!!) just turn on button . - dont put printer in Program Update mode. (no need to press few buttons while turn on the printer) The uploading process will stuck at 70-80% - it is ok! Open task manager and stop updater process. Printer will blink for about 5-15 minutes - then will power OFF. Now power on the printer - chipless firmware is installed in your printer!

Esto es lo que debes hacer: 1. Cargar el firmware de su modelo en el modo de actualización de programas. 2. Reinicie la impresora. 3. Aparecerá el error 06008 - ok. Ahora NO actualice el firmware desde el servidor de Epson. 4. Cargue el firmware sin chip en modo normal. Esto significa que usted no necesita poner la impresora en el modo de actualización del programa. Simplemente instale los cartuchos de tinta originales de Epson y ejecute la utilidad y siga todos los pasos para cargar el firmware. 5. Reinicie la impresora. El error 06008 desaparecerá.

Hi! Make sure you have disabled the network connection. The printer must be connected to the computer with a USB cable only.

Hi! Unfortunately, not all printers can be downgraded to chipless.

Hi! Did you install the Microsoft C ++ packages before running the utility? Also, the error might be because you erased some key characters or left extra spaces in front and behind the key.

¡Hola! El firmware sin chip no tiene nada que ver con la caja de mantenimiento. El firmware sin chip es una solución para el cartucho. Para resolver el problema de la caja de mantenimiento de su WF5710, debe ponerse en contacto con un centro de servicio o sustituir la caja de mantenimiento usted mismo.