Flashing BIOS chip is relatively easy, the end of this article shows how to do this with a cheap USB CH341A adapter supported by the opensource flashrom tool - http://dangerousprototypes.com/docs/Flashing_a_BIOS_chip_with_Bus_Pirate . However, hardware flashing a EC is more difficult - http://dangerousprototypes.com/docs/Flashing_KB9012_with_Bus_Pirate - especially if your EC isn't supported by flashrom. So it's preferable to update EC by a proprietary UEFI tool if you can't hardware flash it, but this could be done only if your laptop is already working. If your laptop reacts to a power button, chances are you don't have to touch your EC. Before flashing a BIOS image extracted from ASUS update utility, make sure you cut the correct 4MB (correct offset, looking at headers, and correct size). And in some cases you may need to populate some areas with IDs (i.e. MAC address of a laptop's Ethernet controller). You can learn more platform-specific info by looking them up online.
On Fri, Mar 19, 2021 at 10:28 AM Aurelijus Gogas firstname.lastname@example.org wrote:
I downloaded from asus. And there is EC firmware update. I extracted. Size is 2MB. Flash chip size is 4MB. Are there some tricks for flashing like this files?
Thanks With Best Regards Aurimas
Get BlueMail for Android On Mar 18, 2021, at 22:06, Mike Banon email@example.com wrote:
Hi there, 20cm wires is a bit long in my opinion - should be 10cm, but still - if your board is "hungry" - there may be a voltage drop and the resulting voltage level is insufficient for the successful flashing. As for "desoldered & flashed & soldered and nothing happens"
- if you're confident your hardware is OK, then there may be an issue
with a proprietary BIOS image that you are flashing, and I could only suggest searching for a good BIOS online or trying to extract it from a manufacturer's UEFI update utility if nothing helps.
On Thu, Mar 18, 2021 at 7:45 PM Aurelijus Gogas firstname.lastname@example.org wrote:
Hallo again. I flashed winbond bios on asus x54h only when desoldered. But when I soldered back, there was nothing. Even light on laptop not lighting. I flashed smaller bios file by adding in begin file difference ( coppied from bricked bios). Are there some solutions? Thanks for answer.
With Best Regards Aurimas
Get BlueMail for Android On Mar 2, 2021, at 18:47, Aurelijus Gogas email@example.com wrote:
I wired like schema. Resistors used like resistor divider signal-200 Om-to flash-200 Om-200 Om-GND. Wires are about 20cm. Wp, hold, vcc connected to 3.3v. when connected to external power supply, then flashrom wrote that is promblem with erase read or something. I wired SPI also as default pins (50-53)… and as schema (31-34).
With Best Regards Aurimas
Get BlueMail for Android On Mar 2, 2021, at 18:27, Mike Banon < firstname.lastname@example.org> wrote:
BV should also work fine. Please could you describe your flashing setup, length of wires etc.
On Sun, Feb 28, 2021 at 10:41 PM Aurelijus Gogas email@example.com wrote:
Thanks for your work (flashrom). In hardware list there is w25q32, but mine is BV. Flashrom can not detect my chip. Is it not supported or i am doing something wrong? I wired like example in tutorial. I have arduino mega2560.
What i can do?
Thanks for help.
With Best Regards
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