Hi All - Been trying to dump out the bios on my asus G750JW laptop using flashrom + bus pirate. The bios chip is Winbond w25q64bv. No success until reading the ISP page and tried disconnecting Vcc, using laptop power and holding power button down on laptop. Unfortunately the bios dump is good in the beginning but ends up being corrupted in the end with dummy data FF FF FF .... Does anyone have any suggestions on getting a good bios dump? Thank you!Marc
On Wed, 4 Mar 2015 01:00:46 +0000 (UTC) typr75s-rog@yahoo.com wrote:
Hi All - Been trying to dump out the bios on my asus G750JW laptop using flashrom + bus pirate. The bios chip is Winbond w25q64bv. No success until reading the ISP page and tried disconnecting Vcc, using laptop power and holding power button down on laptop. Unfortunately the bios dump is good in the beginning but ends up being corrupted in the end with dummy data FF FF FF .... Does anyone have any suggestions on getting a good bios dump?
How do you know that the chip contents are not all FF where you get these results?
Hi Stephan - Using Flash Image Tool (FITC) to verify dumped data and comparing it with a fellow who has the same laptop and was able to dump their bios via spipgm. Was hoping to get it working with bus pirate + flashrom combo. Thanks!-Marc
On Sunday, March 8, 2015 12:06 PM, Stefan Tauner stefan.tauner@alumni.tuwien.ac.at wrote:
On Wed, 4 Mar 2015 01:00:46 +0000 (UTC) typr75s-rog@yahoo.com wrote:
Hi All - Been trying to dump out the bios on my asus G750JW laptop using flashrom + bus pirate. The bios chip is Winbond w25q64bv. No success until reading the ISP page and tried disconnecting Vcc, using laptop power and holding power button down on laptop. Unfortunately the bios dump is good in the beginning but ends up being corrupted in the end with dummy data FF FF FF .... Does anyone have any suggestions on getting a good bios dump?
How do you know that the chip contents are not all FF where you get these results?
-
Stefan Tauner -
typr75s-rog＠yahoo.com