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Surprized - No too much fresh information on the topic of cartridge read/write data and emulation especially with use of logic level analyzer. Edit:

You are 100% right. The only point I would like or even MUST understand how the Chip works in details. This is in case new chip from China will not help.

This is very good idea. I hope will try and make a video with explanation. Also decided to buy a new Chip from AliExpress seller. Will write in 2-3 weeks about result.

The Chip - no way to check each cartridge separately.

Thank you. This looks like a good solution. It is a little bit scary to upload some illigal firmware, but it should work. I can keep it on. Even use UPS, but all in all the electricity may turn off. At my village it happens 2 times per month for 2-5 hours. So no electricity - no sleep mode...

When I turn off turn / turn on the printer it says: cartrudge not recognized. 1. Need to reset the chip. 2. It initialize the printer during 5 minutes. 3. Printer works fine. 4. I turn off the printer. 5. Turn on the printer. 6. Cartrudge not recognized. 7. Reset cartridge chip. 8. It initialize...

Hello. I recently bought Epson WF-7210 and installed InkSystem CISS (continuous ink system for Epson). But it says cartridge not recognized after printer switch off. Main Firmware: SA29H8 Network Firmware: 0B.3A Firmware: 0B.3A.SA29H8 Printer usually says it has a new firmware - go to Settings...

WF-7210