Razer has released the new driver and firmware for Razer Lachesis, the highest end 3G Laser Mouse in their inventory.
Previously, this mouse has problems. Cursor drift and Axis Lock are 2 major problems.
Cursor drift is the drifting (movement) of the mouse cursor when a small movement is made. Axis Lock is the problem that the cursor could only move in the horizontal/vertical axis when you move the mouse.
Razer has released version 1.91 firmware for Razer Lachesis.
Release Log:
- Improved tracking performance and faster response
- There are still a number of people with the jump issue, this firmware addresses the people with this issue
The firmware update is compatible with Windows XP 32-bit SP3/64 bit SP1, Vista 32/64-bit
Download
Version 1.10 driver has also been released.
Release Log:
- Fix single key implementation
- Fix save profile prompt box
- Fix mirroring issue of the side buttons
The driver is compatible with Windows XP 32-bit SP3/64 bit SP1, Vista 32/64-bit
Download (English)
Download (Korean)
Download (French)
The new custom firmware by Dark Alex/Team M33 is here. 4.01 M33-2 is the latest release that fixes the bugs for 4.01 M33.
You can update using the Network Update on the PSP XMB if you have 3.80 M33 or above.
Or you can download the CFW and update on your own.
If you do not have 4.01 M33, you can’t update to M33-2. You can grab a copy from exophase. Remember to get a copy of the official 4.01 firmware.
To update your PSP to 4.01 M33, you need to perform the following instructions:
- After you have download the 4.01 M33 file, extract the content.
- Copy the UPDATE folder to ms:/PSP/GAME/
- Place the official firmware EBOOT into the UPDATE folder as 401.PBP
- Exit the USB mode and proceed to installation of the new CFW in the game menu. Made sure you have at least 78% battery life.
After you have follow through the SCE updater, Press X or O to end the update. Make sure you press X or O, otherwise you will land up with a BRICK.
After you have 4.01 M33, download the 4.01 M33-2 file from exophase also.
- Extract the content of the file
- Copy the UPDATE folder to ms:/PSP/GAME/, overwriting any files if you didn’t delete the 4.01 M33 files
- Exit the USB mode and proceed to installation of the update in the game menu. Made sure you have at least 78% battery life.
According to QJ and PlayStation Blog, Sony has released version 4.00 firmware for the portable gaming console, PlayStation Portable.
The new firmware will allows users to search in the XMB interface via Google. There will be a new Internet Search icon under Network icon. There will be a history of past 20 searches. So you will have your favourite searches in an instant.
The new firmware also you to change viewing speed during playback of videos stored on your Memory Stick PRO Duo by simply pressing up or down during the video playback.
DivX support did not come with this firmware. Disappointing.
After so many months, Razer has released the first driver/firmware update for Lachesis, the top-of-the-line Laser Mouse.
You can refer to this post for issues regarding Lachesis.
You can download the driver from Razer website.
If you are an owner of the “Bringer of Slient Death”, the top of the line Razer Mice, Lachesis, you might encounter 2 issues while using it.
- Cursor Drift: While you are moving your mouse, suddenly the cursor ‘drift’ to somewhere else on the screen. Irritating when you are playing FPS game.
- Axis Lock: While moving your mouse, you can’t move it up or down, but the cursor can move horizontally, or vice versa. Also very irritating.
I also own a Lachesis and living with the problems ever since Day 1.
The original firmware that came with your mouse is v1.00, which is the buggy one.
Now, Razer has beta firmware for Lachesis and I have tested it. So far, the ‘drifting’ and ‘locking’ have not been occuring. The firmware update is a breeze. You just have to replug your Lachesis after the firmware update is done.

You can try out the beta firmware from the Razer website to solve these problems. I guess the official firmware should be around the corner… Stay tune!