Laptop Forums and Notebook Computer Discussion - View Single Post - S-XPS 1645 AC Power Throttle Issue Investigation

Mitchell2.24v · 01-13-2010, 07:49 AM

There is a simple way to go back from X29 to A03 (or any other BIOS). I have just tried it in my machine. I have extracted the WinPhlash utility and modified the settings. The X29 BIOS is set up so you can only flash a newer version over it. With my modified settings you can flash any version.

Just to be clear. I did not change anything to the actual BIOS file, just to the WinPhlash program settings. I compiled a package with every BIOS so far, and the working WinPhlash tool:

http://www.sendspace.com/file/3iipb2

To test this, I went from A03 to A01 to X29 and back to A03.

Here is my system on X29:

Using the above mentioned tool, I flashed it back to A03 with no problems.:

I did not do any throttling tests, as I just wanted to know / prove that it's possible and easy to downgrade back to A03.

01-13-2010, 07:49 AM	#2634 (permalink)
Mitchell2.24v Notebook Evangelist Join Date: Sep 2008 Location: Amsterdam, NL Posts: 590 Rep Power: 11	Re: S-XPS 1645 AC Power Throttle Issue Investigation There is a simple way to go back from X29 to A03 (or any other BIOS). I have just tried it in my machine. I have extracted the WinPhlash utility and modified the settings. The X29 BIOS is set up so you can only flash a newer version over it. With my modified settings you can flash any version. Just to be clear. I did not change anything to the actual BIOS file, just to the WinPhlash program settings. I compiled a package with every BIOS so far, and the working WinPhlash tool: http://www.sendspace.com/file/3iipb2 To test this, I went from A03 to A01 to X29 and back to A03. Here is my system on X29: Using the above mentioned tool, I flashed it back to A03 with no problems.: I did not do any throttling tests, as I just wanted to know / prove that it's possible and easy to downgrade back to A03. __________________ XPS 17 - i7 740QM, 16Gb RAM, 500Gb HDD + 256Gb SSD, 3Gb GT 445M, AUO B173HW01 V.4 1080p M17x-R4 - i7 3820QM, 24Gb RAM, 2x 256PM830 + 1x64PM830 (mSata), 2Gb 7970M, FHD display Last edited by Mitchell2.24v : 01-14-2010 at 04:00 AM. Reason: typo