M50VM BIOS 207 Light Sensor Fix Yet?

Hey guys as you know 207 BIOS for the M50VM breaks the light sensor, has anyone found a fix? Or a copy of the 205 BIOS yet?

This is my 2nd thread on the topic, but I'd really like to be able to use my light sensor again, especially at school on battery.

Has anyone not had this issue when updating their BIOS? Let me know thanks!

 

I haven't been able to track down a download of the 205 BIOS (or backup the 205 BIOS currently on my M50Vm), but I have a copy of the 204 BIOS that I've uploaded to the site below:

http://drop.io/m50vmbios

 

Are you sure the BIOS is responsible for the ambient light sensor no longer working? I was testing a few things in Vista related to the hotkeys and noticed that if I switched on the Ambient Light Sensor using FN+A and then FN+F6'd all the way to the max (thus overriding the Ambient light sensor settings), and then I turned on/off/up/down the light in the room the ambient light sensor did not adjust. When I FN+F5'd back to the minimum part of the graph/bar and changed the light in the room the sensor did work.

It's possible you unknowingly changed that setting with the hotkeys around the same time you updated the BIOS, and mistakenly concluded that the BIOS were the cause of the light sensor no longer adjusting.

 

I'm not the only one who experienced this problem when updating to 207, so it's not just me unfortunately.

As for your suggestions, before I upgraded BIOS's, the problem you describe never happened. Maxing out the Ambient Light Sensor, it still worked, it was just obviously going to give you a bonus to the light it detects you need. But it definitely still changed.

As for the 204 BIOS, I'm not going to take the risk lol, my B2 came with 205 so I'm not quite sure if it's going to work well with 204.

 

After I updated to the 209 BIOS when they were first released I lost the ambient light sensor function as well. Back then I contacted Asus, and they were unsuccessful in helping me to resolve the issue. However I recently decided to try contacting them again about the issue (but left out the information that I'd hadn't encountered the problem until I updated the BIOS).

Lynard Arandia of Asus instructed me to set the screen brightness to its lowest after I enabled the light sensor. (In other words doing an FN+F5 until it no longer could dim the screen any further). I toggled the FN+A to enable it, FN+F5'd until it wouldn't go any further, and then changed the lighting in the room numerous times. The light sensor worked again!

I did a little more experimenting, and found that I don't need to go all the way to the minimum level. Setting it to ~1/3 of the total brightness (instead of the darkest) while in ambient mode appears to allow it to function correctly as well.