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Crossflashing/Overclocking DVD±RW Drives

WARNING: Know what you're doing! None of this is supported or condoned by the drive manufacturer. You will void your drive's warranty if you try anything listed here, so proceed at your own risk! Also note that not all overclocks/crossflashes will produce good results.

Once again, you will be voiding your warranty if you make use of the material presented on this page! If you don't know what you're doing or if you aren't sure if you should be using the stuff here, then don't mess with this!

Common Crossflashes Covered by this Guide

  • 401S@411S, 401S@811S
  • 411S@811S
  • 451S@832S, 451S@812S, 451S@851S
  • 851S@832S, 851S@812S
  • 812S@832S, 822S@832S, 802S@832S, 802S@812S
  • 1213S@1653S, 1213S@1633S, 1213S@1613S
  • 1613S@1653S, 1613S@1633S
  • 1633S@1653S
  • 1673S@1693S
  • Slimtype drives: 421S@431S, R56A@852S, R56A@D56A, etc.
  • (bold = capable of double-layer burning)

There are actually many more that's supported than what's listed here, especially involving rebranded drives such as Sony drives; listing all of them would be cumbersome. Just know that it works for those drives, too. ;-) If you're not sure, you can check out this page or ask in the LiteOn forum.

Crossflashing Instructions

Pick one of the four crossflashing methods listed below. Depending on what drive model you have and what you are trying to flash to, not all of the methods will be available.

Note: 401S and 411S users looking for 401S@811S or 411S@811S must use method #4!

Method 1: OmniPatcher (universal method)

  1. Download an unscrambled stock (i.e., original) firmware for the drive that you are flashing to from either our firmware page or dhc014's firmware page.
  2. Download the OmniPatcher and read the documentation carefully. For the best compatibility, please make sure that you have version 2.2.0 or newer.
  3. Load the stock firmware with the OmniPatcher and apply the crossflashing patch (and while you're at it, any other patches that you want). When you are done, save it.
  4. Flash your drive with the OmniPatcher-patched firmware that you have just created. If your patched firmware is a flasher (i.e., with a .exe extension), simply double-click on the patched firmware and follow the instructions. If your patched firmware is a raw binary firmware (i.e., with a .bin extension), please use LtnFW to flash your drive.

Method 2: Pre-Patched (only when a pre-patched crossflashing firmware is available)

  1. Download a crossflashing-patched firmware for the drive that you are flashing to from our firmware page.
  2. After unpacking the RAR package, double-click on the firmware to start the flasher. Be sure to select the correct drive, and flash.
  3. Note: If a crossflashing-patched firmware is not available for download, please follow Method 1 instead (the crossflashing-patched firmwares that we provide were created by simply following steps 1-3 of Method 1).

Method 3: CGxx (only for @832S)

  1. Download a CGxx (e.g., CG3B) firmware from our firmware page.
  2. After unpacking the RAR package, double-click on the firmware to start the flasher. Be sure to select the correct drive, and flash.
  3. Note: For more information about the CGxx firmwares, click here.

Method 4: The EEPROM Utility

  1. Download the EEPROM Utility. Make sure that you have version 3.0.0 or newer.
  2. After unpacking the RAR package, read the readme, and follow the instructions inside.
  3. Note: Not all crossflashes are supported by the EEPROM Utility. Unsupported crossflashes include 1673S@1693S, x51S@8x2S, and slimtype crossflashes (you can still use one of the other three methods for these unsupported crossflashes). Please consult the EEPROM Utility's documentation for more details.

Updating to a Newer Firmware (if using methods 1, 2, or 3)

If, after crossflashing a drive, you wish to update to a newer firmware, you must follow one of the procedures listed above!

Example: Let's say that you have a 812S drive that you had flashed to a 812S@832S drive using the VS0A firmware. If you want to update to the newer VS0B firmware, you will have to first patch VS0B with OmniPatcher's crossflashing patch before loading it onto your 812S@832S drive! This is because, deep down inside, your 812S drive is still a 812S drive, and thus, any 832S firmware that you load onto your 812S--regardless of what firmware is currently loaded--must be patched!

Updating to a Newer Firmware (if using method 4)

Simply flash to the new firmware. No special steps are necessary.

Undoing the Crossflash (if using methods 1, 2, or 3)

Simply flash your drive with the firmware for your drive's original model (you may need to use FlashFix if you want to use an official flasher; most unofficial flashers, such as all of the ones found on this site, are already FlashFixed--once the crossflash is undone, FlashFixing will not necessary for any subsequent flashes).

Undoing the Crossflash (if using method 4)

In addition to flashing your drive back to a firmware for your drive's original model, you must use the EEPROM Utility to undo the crossflashing changes made to the EEPROM. Please consult the documentation for more details.

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