Quote:
Originally Posted by Waldy
After replacing the display or with someone else's image recorded on the µSD card, you can try this method to change the vcom value.
1. Make sure that you have firmware 4.38.23171 installed on your Kobo Nia, if not, update it.
2. Now install the firmware kobo-nia-temporary-update-4.41.23145.zip on top of 4.38.23171.
In this firmware, I simply changed the drivers so that it would install on Kobo Nia and it would be possible
change vcom value.
3. Change vcom values following these instructions: https://www.ifixit.com/Guide/How+to+...Display/170983
4. After the change, do a hard reset using the button or turning on devmode.
Developer options - Factory reset your eReader.
5. Update to the latest firmware (currently 4.38.23171).
I tested this on Kobo Nia, but do so at your own risk. |
Quote:
Originally Posted by Waldy
I think you expect too much from the VCOM values.
Take a photo of what the screen looks like when reading, maybe everything is OK with you.)
I swapped SD cards on many devices and did not notice much difference. It is very rare that the font looks paler.
I have prepared an image for you from 4A2 from such a device (there are others):
https://ibb.co/SwvB6KS3
https://ibb.co/Y4gbzWwp
https://ibb.co/XfCqGzzW
4C1 I have only three devices, tell me from which one should I create an image:
https://ibb.co/4nKPzL2C |
wait sorry i didnt mean to ask you to provide more images thanks though, i have a perfectly working nia with matching display from factory, i just merely wanted to test if vcom values could indeed be changed. i also have another nia motherboard without adisplay, that way icould test the vcom change twice. changingthe vcom did nothing to either board,before and after
thats why ibelieve thereis no abiliy to change vcom present. unless vcom was changed and the problem with fading screen was due to waveform being different? to b clear, the extra motherboard did have the fading screen issue but the perfectly working one did not
btw did uedit the waveform name along with th3 serial number for the rev a 276 img u sent me? the waveform is ad3421 while on mine it is ad4321, theyre soclose icant tell if it was a typo or what. ive juet realised u changed the serial bc giving that info is abad idea isnt it. okay after checking various images , waveform numbers are unique to each device/panel batch in addition to having unique vcoms