New Wave4 XBox 360 Disc Sizes Require Firmware Update


236w ago - It appears Microsoft is now including the most recent major Dashboard Update on new game discs, specifically the Summer/Fall 09 update that brings the NXE dash to 8498.

As a result, they are closing the exploit used for the Free60 JTAG/SMC XeLL (Linux homebrew) hack.

To quote: "The first game confirmed to have this update on the disc is Cars Race-O-Rama. They added the new update into the video partition on the disc, which makes the partition larger than it always has been on older games.

Previously there were 3 known good sizes for the video partition, they were known as wave1, wave2 and wave3. One of the security features in all iXtreme firmware (except 1.51) is a check on the size of the video partition to make sure it matches one of the known waves.

The firmware will not boot any game that does not match a known wave, this is done to prevent booting bad backups and getting banned on Live. Since this new game has a larger video partition that does not match any of the 3 known waves, it does not boot.

This new game with the larger video partition is the start of "wave4" and our hacked firmware will need to be updated to accept this new size as a good value. The ETA for this new firmware is unknown. All drives will need to be updated to the new firmware once it's released in order to play backups of new games!

If the switch from wave2 to wave3 last year is any indication, there will be short cross-over period starting now where new games being released will be a mix of wave3 and wave4. After that it's safe to assume all new games will be wave4 going forward.

If you have a Samsung, BenQ or Lite-On 74850c drive you could choose to downgrade to iXtreme 1.51 to boot wave4 games. iXtreme 1.51 did not check the size of the video partition so it will boot any wave. iXtreme 1.6 brought the checks back for better security, but c4e coded a workaround into iXtreme 1.6 that allows "one shot" booting of non-stealth or unknown sized discs (new waves).

To do this you use the 0800 disc (activate.iso) that is available on this site and is also included with the iXtreme 1.6 firmware. Additional details on usage are in the iXtreme 1.6 README file. Obviously this method may not be safe for Xbox Live and should be used offline only and at your own risk."



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Kellog's Avatar
#2 - Kellog - 235w ago
If you have a Samsung, BenQ or Lite-On 74850c drive you could choose to downgrade to iXtreme 1.51 to boot wave4 games. iXtreme 1.51 did not check the size of the video partition so it will boot any wave. iXtreme 1.6 brought the checks back for better security, but c4e coded a workaround into iXtreme 1.6 that allows "one shot" booting of non-stealth or unknown sized discs (new waves).

To do this you use the 0800 disc (activate.iso) that is available on this site and is also included with the iXtreme 1.6 firmware. Additional details on usage are in the iXtreme 1.6 README file. Obviously this method may not be safe for Xbox Live and should be used offline only and at your own risk."
Not true, as "abgx360 v1.0.1 (latest as of time of writing) does not recognize a "wave 4" image and will report a POSSIBLE
corrupt/bad PFI/Video partition, however the program is actually still completely compatible with Wave 4 games. Once a
Wave4 title is verified, abgx360 will still download the .ini from the database and fully check out the image. If the image matches and the game is verified, then it has also passed the stealth checks and thus it is as safe to play as any wave3 or
wave2 game."

So, if you boot a VERIFIED Wave4 game using this above mentioned bootdisk, you should be just as safe as you were booting a verified wave 3 game. Also, it is not any safer to boot the backup with 1.51, so I would rather wait for new iX version, than spend my time flashing back to 1.51 (which is naturally more unsafe than 1.6).

And you should remember, than non stealth discs write logs (removing HDD / Mem. card wont help) to your XB even when you're not in Live, so you shouldn't ever play any nonstealth backups, if you are willing to keep playing in Live with that XB.

[NB, Checked Wave4 games are actually stealth, even if current abgx360 v1.0.1 & iE1.6 doesn't recognize it].

comhen's Avatar
#1 - comhen - 235w ago
Damn i have a liteon, now that would very annoying putting Actvate.iso in the drive before you playing games with Wave 4 update. I hope they come out with an update or downgrade for the liteon before more games are released.













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