Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

so are there any printers without that flaw?

Yes , the Printers type Laser cartridges , since they contain toner powder so there's no need to worry about running into dried or clogged ink . Laser printers that use toner cartridges print thousands of pages so you don't need to worry also about quick replacement .

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

so are there any printers without that flaw?

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

for reminder my initial intent is not to be able use the scanner while the ink cartridges are dry or empty, but to be able to use it without cartridges

but I didnt know Canon cartridges dry out
what printer brands make cartridges that dont dry out? or is that a design flaw common to all printers?

It's not the cartridges that dry out Urizen , as long as they're sealed , it's the capillaries inside the printer .

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

Hi Urizen .. Do you know why Canon insist on printing cartridges continuity ? , it's because , if you don't print at least one page each month , then the capillars eventually will dry and destroy the device . Are you willing to destroy the printer to keep scanning ? ..

for reminder my initial intent is not to be able use the scanner while the ink cartridges are dry or empty, but to be able to use it without cartridges

but I didnt know Canon cartridges dry out
what printer brands make cartridges that dont dry out? or is that a design flaw common to all printers?

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

just a question if I flash a bad firmware - say, one where I modified some bytes at random (there's only 1024 of them anyway so the ink-detection function must be in there somewhere) - will the printer be bricked for good or is it possible to restore it by reflashing with the original firmware?

Hi Urizen .. Do you know why Canon insist on printing cartridges continuity ? , it's because , if you don't print at least one page each month , then the capillars eventually will dry and destroy the device . Are you willing to destroy the printer to keep scanning ? ..

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

just a question if I flash a bad firmware - say, one where I modified some bytes at random (there's only 1024 of them anyway so the ink-detection function must be in there somewhere) - will the printer be bricked for good or is it possible to restore it by reflashing with the original firmware?

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

but in this case aint it just a matter of altering a couple of bytes in this file? if so it's frustrating cause I can see the entire file on notepad cause it's so tiny yet I dont know what to edit :/

(btw I didnt expect the firmware to be contained in only 1024 bytes that dont seem much room to program something like a printer)

Yes Urizen ; you're on your own now . You know the basics and what you should focus on ..

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

For experts , yes , but it would take quite a longtime to write the intended target from the firmware , specially if it wasn't done or commonly needed like in Laptops case e.g.

In your case , I'm sure no one wrote that , at least for online purposes , so you're on your own basically ..

but in this case aint it just a matter of altering a couple of bytes in this file? if so it's frustrating cause I can see the entire file on notepad cause it's so tiny yet I dont know what to edit :/

(btw I didnt expect the firmware to be contained in only 1024 bytes that dont seem much room to program something like a printer)

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

to actually work on firmware I'd have to learn assembly language right? I've done "high level" languages in the past like C but assembly is supposed to be a lot harder to learn

anyway I found this thread https://www.badcaps.net/forum/showthread.php?t=92191

not sure what everything means but I downloaded service tool + the eeprom dump (that's the same as bios/firmware dump right?)

so this suggests it's possible to flash a bios without opening the device???

now I just need to know what to modify in the bios file and it's exactly 1kb (1024 bytes) so it's cant be that hard for one of the experts to find right? :/

nb. I download this bios: https://www.badcaps.net/forum/attach...3&d=1613423701

Yes , you need to learn a form of C , and yes , it's very difficult to start from scratch ..That Reminded me when I learnt the C++ , then R language for Statistics and Probabilities , and after that Java and PHP . In reality , and trust me , once you start , the sky has no limits . There's a beginning but there's no end .

For experts , yes , but it would take quite a longtime to write the intended target from the firmware , specially if it wasn't done or commonly needed like in Laptops case e.g.

In your case , I'm sure no one wrote that , at least for online purposes , so you're on your own basically ..

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

to actually work on firmware I'd have to learn assembly language right? I've done "high level" languages in the past like C but assembly is supposed to be a lot harder to learn

anyway I found this thread https://www.badcaps.net/forum/showthread.php?t=92191

not sure what everything means but I downloaded service tool + the eeprom dump (that's the same as bios/firmware dump right?)

so this suggests it's possible to flash a bios without opening the device???

now I just need to know what to modify in the bios file and it's exactly 1kb (1024 bytes) so it's cant be that hard for one of the experts to find right? :/

nb. I download this bios: https://www.badcaps.net/forum/attach...3&d=1613423701

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

but if it's possible to flash a firmware to a device without opening it then isnt it automatically possible to also extract that firmware from a device without opening it? figures it goes both ways

at any rate I'll try find the firmware for my printer

Could be , couldn't be ..I have to open a Cannon (Pixma MG 2550s) , which I won't do .. But I'll help answering questions however I can ..
Look , a friend of mine's primary job is to repair and flash Elevators bios , so if you expand in this domain , it's good for you on many levels .

https://en.wikipedia.org/wiki/EEPROM

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

but if it's possible to flash a firmware to a device without opening it then isnt it automatically possible to also extract that firmware from a device without opening it? figures it goes both ways

at any rate I'll try find the firmware for my printer

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

but even if I could get the firmware file somewhere I'd still have to open the device to flash it right?

Not necessarily , it depend on devices . It might be similar to a firmware update, and done through USB , or it might be you have to remove the firmware chipset , etc ..Even elevators are programmed .

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

but even if I could get the firmware file somewhere I'd still have to open the device to flash it right?

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

thanx I got it but if I understand correctly I need to open & physically manipulate the printer just to extract or flash the firmware ? +_- that's the first time I hear of this cause for other devices like mainboards GPUs & routers we dont need to do that

Yes my friend ..This is the hard way . The easy way is to search for someone who took the load and wasted his time doing it , then give it to you for free ..Many years ago , this was the reason to find Badcaps . I'm a ultra multitasking man , which leave me little time , so any good help was appreciated .

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

In theory , everything is simple , but that's not the case here ..Anyway , i'll send to you a link for starters , if i may say so , in private messages ..

thanx I got it but if I understand correctly I need to open & physically manipulate the printer just to extract or flash the firmware ? +_- that's the first time I hear of this cause for other devices like mainboards GPUs & routers we dont need to do that

[jiroy]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

lesson learnt but for this 1st round it's too late :/

anyway I reckon it must be just one line of code in the firmware which essentially says "if printer not ready then scanner cant run"

so in theory someone firmware-savvy should be able to find & delete this sh right?

for starters how to I "extract" the firmware? (assuming it's possible for these printers which is a standard usb printer btw)

In theory , everything is simple , but that's not the case here ..Anyway , i'll send to you a link for starters , if i may say so , in private messages ..

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

https://www.youtube.com/watch?v=WO6n8lyJtlg

tried that though it's not clear what he did

hold "stop"
hold "power"
release "stop"
press "stop" 2x
release "power"
(w/o explaining what that's supposed to do)

but then he presses "power" again & the printer is supposed to try print? my printer just goes off

I also tried doing the first step but by pressing "stop" either 4x or 5x

whatever that's supposed to do they probably changed it for the mg2550s

[vinceroger69]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

https://www.youtube.com/watch?v=WO6n8lyJtlg

[Urizen]

Re: Canon scam: is there a useful hack to scan WITHOUT ink ? (Pixma MG 2550s)

lesson learnt but for this 1st round it's too late :/

anyway I reckon it must be just one line of code in the firmware which essentially says "if printer not ready then scanner cant run"

so in theory someone firmware-savvy should be able to find & delete this sh right?

for starters how to I "extract" the firmware? (assuming it's possible for these printers which is a standard usb printer btw)