Closed GoogleCodeExporter closed 9 years ago
I figured something out, the eeprom changes survive a reboot, but the eeprom
gets reset after a power off.
Also, the linux kernel uses the vid to check which driver to load, so changing
it makes the 6200 non-functional (I figured something like that, but it was
worth a shot).
Original comment by bob.loo...@gmail.com
on 14 Nov 2011 at 6:14
Hi bob,
I'll soon try to put an Intel Centrino 6250 without Lenovo's approval (aka
without FRU) into a Thinkpad X121e, which has a whitelist in the BIOS. Not sure
which of the pci config space id (subsystem, revision) must be adapted. From
the Linux source code it seems that there is the option of an OTP (one-time
programmable) EEPROM on the 6250. I hope this isn't the case with my card.
Maybe you wrote to the cached content in RAM instead?
Why didn't you patch the program in the trunk but used the atheros branch for
your try?
Even if writing the vid let the Linux driver not detected it anymore, the
iwleeprom program shall be able to change it back, as it doesn't need the
driver.
Original comment by joerg.al...@googlemail.com
on 17 Dec 2011 at 2:26
Hey all, I have a Centrino N 6235 chip with the same issues, I added my chip to
the supported listed in your code then was able to dump the eeprom, I havn't
tried writing to it yet.. How can i confirm the size of my EEPROM is 5k (thats
what i selected?) to make sure i atleast have that part setup correctly..
thanks!
Original comment by ginolovesyou@gmail.com
on 5 Feb 2013 at 7:33
Intel 6000 and 1000 series often do not have eeprom.
Instead they use OTM (One-Time Programmable) memory.
So, the only option for such cards is soldering external eeprom.
External eeprom must be pre-programmed before soldering because the card checks
it's signature and if it fails the card tries to use OTP again.
P.S. the same for Intel 100 series
Original comment by alexan...@kalinichenko.org
on 17 May 2013 at 9:26
And if you write OTP it just writes data to card RAM, which is erased after
power off.
Original comment by alexan...@kalinichenko.org
on 17 May 2013 at 9:27
Original comment by alexan...@kalinichenko.org
on 17 May 2013 at 9:28
Thanks for the explanation.
Original comment by bob.loo...@gmail.com
on 17 May 2013 at 10:15
Original issue reported on code.google.com by
bob.loo...@gmail.com
on 14 Nov 2011 at 5:07