I haven't thoroughly studied what all the Easter Egg Exploit can do. In fact, as of this writing, I just got it working within the last few hours. It would be interesting to see if this could work with UDE2 so that UDE2 would be safer for installation (especially on kernels higher than 5713 where UDE2 is the only option), but unfortunately I doubt it just because the newer Microsoft XBE files probably don't look in the root directory of the C: partition.

I have since found that having an unauthorized C:\xboxdashdata.????????\settings_adoc.xip file WILL prevent the "Xbox Live!" service from successfully updating the dashboard to the latest version. "Unable to continue due to technical difficulties. Please try again later." (In at least one test, this showed up even after a long wait and some small amount the progress bar had become highlighted (increasing the amount highlighted twice, once from none to a bit, then to a little bit more).)

• The "Easter Egg" purposefully put into the dashboard release by Microsoft is as follows:

  If copying an audio track to a hard drive, and the name of the soundtrack given is "<<EggsΒox>>" (not including the quotation marks) then a file called "C:\xboxdashdata.????????\settings_adoc.xip" (where each question mark is a hexademical digit).

  • The greater-than and less-than signs are under the Symbols menu (those are different than the cursor-moving arrows visible on the Alphabet menu), and the beta sign is in the Accents menu.

  This "Easter Egg" (a somewhat common name for such little secrets that are hidden ahead of time so they can be found later) can be exploited. To do this:

  • Obtain devz3ro's package from "The Usual Places" at /XBOX/exploits/Font_Exploits/doubledash/doubledash.rar
  • Do not follow the directions inside that package. Instead, follow my adaption of the combination of those instructions and the updated instructions listed at the Live 2.0 Compatible Exploit exploit. (In other words, very simply, just follow the instructions located right here.)
  • Ensure that you are using a supported version of the kernel. Kernel 5713 and Dashboard 5659 (Halo Edition Xbox) did not work. (It also failed to show the developer's credits as expected in an unhacked state.) I believe this is because any Xbox with a kernel version of 5713 or later will be completely unable to use this exploit.
  • Ensure that you are using a supported version of the dashboard.
    • devz3ro's documentation in the doubledash.rar file says that Dash 4920 is supported. I can confirm that.
    • devz3ro also reports on a forum post that Dash 5960 works (with kernel 5101)
    • PedrosPad's Dashboard Exploit Summary indicates that any dashboard version that is at least 4920 will work.
  • Ensure that you do have a C:\fonts directory, and that there are two files in there: "Xbox Book.xtf" and "Xbox.xtf". Basically, the purpose of this is to make sure you're not using an older dashboard that uses the files in C:\*.XTF.
  • Rename, or backup-and-delete, all C:\*.XTF files so that there are no files in the root directory of the C:\ that end with *.XTF.
  • Rename, or backup-and-delete, all C:\*.XIP files so that there are no files in the root directory of the C:\ that end with *.XIP.
  • Copy the files from doubledash's /C directory (but not the /C/xodash subdirectory) to C:\. That is, copy the following files from the doubledash.rar to the C:\ of your Xbox:
    • bert.xtf
    • default.xip
    • ernie.xtf
    • mainmenu5.xip
  • Optional but highly recommended: Backup C:\xodashdata.????????\settings_adoc.xip (to Settings_adoc.XBE)
  • Copy/Rename the \c\xodash\xonlinedash.xbe file included in the doubledash package to the Xbox's C:\xboxdashdata.????????\settings_adoc.xip
    • Do NOT overwrite the C:\XODash\xonlinedash.xbe file with the one in the doubledash.rar file. (This may or may not be harmful, I don't know if it is, but I do know that such a thing is unncessary, and I definitely recommend against overwriting the file if it isn't backed up first.)
  • Put a copy of a Habibi signed file in E:\ and make sure it is named E:\Default.xbe. I recommend using XSelect 0.9 which comes Habibi signed.
    • I actually try to create the entire recommended Startup Sequence for Hacks starting with XSelect 0.9 at E:\default.xbe
  • Ensure that when you go to the dashboard that you will have a soundtrack on your Xbox. This can be a valid soundtrack on the hard drive, or a hacked sound track index (ST.DB file), or it can simply be an audio CD (without a computer data track at the start) that the Xbox can recognize so you can copy that sound track.
  • Reboot, go to the Xbox, and perform the steps for the Easter Egg (copy a sound track and name the file "<<EggsΒox>>").

• The announcement of this hack from devz3ro was on a forum post called Live 2.0 Compatible Exploit, which seems to be a continuation from some earlier thread. That page now contains a ST.DB which is entirely different from anything to do with this "Easter Egg Exploit" ("EEE").

• ldots calls this a font exploit which "loads rmenhals fonts.". Despite using the audio menu, this is really taking advantage of the Easter Egg and using font hacking techniques, and this does not use techniques of hacking the soundtrack index like the "audio exploits" do.
• Reported to reboot when this hack's effects are triggered while signature checking has been tampered with. So, if an alternate dashboard ran Microsoft's official dashboard because an audio CD was detected, one may find they must reboot before this reboot to allow the audio hack to work at running unsigned code again.