Hi, This is just a follow up email. I was wondering what the status is of support for the EN25S64 bios chip. I have tried to flash it many times and it always fails. See my message below for more details. I would like to help out with any testing for this chip, however if I don't hear back from you soon, I will probably be returning the laptop I have which contains the EN25S64 chip. Thanks, Kyle Stanevich On Oct 4, 2015 6:22 PM, "Kyle Stanevich" <kstanevich@imsa.edu> wrote:

Hi,

I am still having trouble flashing the EN25S64 chip on my Lenovo N21 chromebook. I have connected a raspberry pi to the EN25S64 on the Lenovo N21 motherboard chip via this clip ( http://www.amazon.com/Qunqi-Soic8-Flash-Clips-Programmer/dp/B014IXR9RG). On the raspberry pi (which is running raspbian) I run the command "sudo ./flashrom -VVV -p linux_spi:dev=/dev/spidev0.0 -w ~/Downloads/bios.bin". I have removed the write protect screw, but I don't think that matters because I am connecting to the chip directly.

I have tried to compile google's (chromiumos') version of flashrom, but I could not get it to compile due to many errors. Therefore, I am using the latest version of flashrom which compiles fine.

It seams to me that the problem is there is something not working correctly writing/erasing/reading to the chip. Erase functions 1 through 3 all fail when using the command shown above. It hangs up on erase function 2 for a very long time. I had to run it overnight until erase function 2 failed. I have tried running the same command again, and it is currently still stuck at "Trying erase function 2... 0x000000-0x7fffff:E". It has been stuck at this line for 16 hours, with the raspberry pi at 100% cpu usage the entire time.

The line "This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE" indicates to me that this chip has not yet been tested. I would like to help out with testing for this chip since I have one and have the hardware required to flash it. What can I do to help out?

Thanks, Kyle Stanevich

On Sat, Oct 3, 2015 at 3:56 PM, Stefan Tauner < stefan.tauner@alumni.tuwien.ac.at> wrote:

...

On Sat, 3 Oct 2015 10:13:36 -0700 Kyle Stanevich <kstanevich@imsa.edu> wrote:

...

Hi,

I have attached all the output from my command line. Hopefully it will be useful for you.

Do you think that I will ever have a chance to flash this chip, or should I go and buy another laptop?

Hi,

first of all you should not reboot before fixing the issue. If you made a backup first, you should try to write that instead. If that works you are at least safe...

I am not familiar with the N21 but you probably have to disable a write protection. Also, chromebooks work best with google's (chromiumos') version of flashrom.

-- Kind regards/Mit freundlichen Grüßen, Stefan Tauner