Question about Canon imageCLASS MF4150 All-In-One Laser Printer

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My printer I-sensys mf4350d is blocked and showing me the massage BIOS MODE - wait updating....?? what should i do ?

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You need to update your firmware.

Go here to download it:

Make sure to download the correct version for your operating system.

Posted on Apr 11, 2011

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Canon mf4350d service manual

hello friend, you can find the canon mf4350d service manual in below link:

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Canon ImageClass MF4350d *BIOS MODE* Problem Hello, when I turn on my Mf4350d printer, I get *BIOS MODE* WAIT UPDATING F/W so I tried to update the firmware.. I've downloaded firmware upgrading...

This is not an answer, but I will also suggest that any of the above answers that do anything on the PC/Mac side will not work. The MF4350d "*BIOS MODE*" and then "*BIOS MODE* WAIT UPDATING F/W" occurs when the MF4350d BIOS is corrupt or the EEPROM hardware has failed, when this happens the PC/Mac has minimal communication with the MF4350d and will not be able to update the firmware. One suggestion is to unsolder the EEPROM from the MF4350d and resolder the EEPROM, which effectively resets the EEPROM firmware. See,d.cGU
But I am looking for another solution. If I have to remove the EEPROM I will, but I will do a lot more research before I tear it apart and conclude that the worst I can do is throw the MF4350d printer away and get a new one.

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The unit has a bad SCNT board. There is no method for forcing an update while stuck in BIOS Mode. Canon part #: FM4-1273. MSRP is $335.87 if you buy new from an Canon Authorised Service Facillity (ASF).

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