I think it is a hardware (cartridge) issue. Rabiul bhai thanks again for the quick reply yes the led’s blink correctly just like your video at the top of this page, first red led, then green led, and last of all yellow led and then back to red led i opened the side cover and took the toner cartridge pcb out by sliding it and sure enough the number is written on the 8 pin chip as 24C04WP, made by ST So will search for it in Stadium Market and have it soldered on the pcb at any mobile phone repair shop where they have hot air soldering station, if it is a SMD type Also downloaded the data sheet for it thanks again with best wishes. Usbprns2 exe download reset printer - Samsung Clp-365 Colour Laser. If you are in Dhaka this chip is probably available in Patuatuli or Stadium Market. So, there is nothing much complicated that may make it ‘not working’. But the new firmware is not like it in reducing, it would generate almost random number 0 – 9. The bug in the 1st firmware is like – the last 2 digits of the serial number is reduced to 0 - then 9 again, one after another, and the error was once it would be a byte not between 0 to 9.
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