[XPERIA X10 Android Development] erickwill:
NEW EWJET XKernel Version X2.2ex Rom (RECOMMENDED) - USING LATEST SE FIRMWARE X10i 2.1.B.0.1 AND STABLE - Modded Custom FreeKernel V360 for baseband 67 - NEW RELEASE (thanks to tkymgr and Z)

ATTENTION: FOLLOW STRICTLY THE INSTRUCTIONS BELOW.

YOUTUBE VIDEO ON INSTALLATION... http://www.youtube.com/watch?v=ZK7b2jhDWec&feature=related

Thanks again to our Friend LJE(Luke).:)

Here you go..

OPTIONAL; Back up your mobile data APNs using APN Backup, as they will be erased when flashing this ROM.

*After flash xKernel try to use your Edge or 3G without restoring the APN's backup. Just in case it doesn't works, proceed the instruction bellow. (Thanks to my friend Wolfbreak for provide me the fix.)

Quick step by step: http://xdaforums.com/showpost.php?p=14186294&postcount=1618 (thanks to my friend astrall)

1 - First install the Rom (Do not reboot after installation, but go to step 2)

[+]NEW EWJET XKernel Version X2.2ex: X10x.2.1.B.0.1.EWJET.XKernelGinger.clr.X2.2ex - http://www.mediafire.com/?gbefn850sw9gxpg

or

[+]NEW EWJET XKernel Version X2.2ex (Latest Blue Theme): X10x.2.1.B.0.1.EWJET.XKernel.X2.2ex - http://www.mediafire.com/?9y37etac29hofum

or

[+]NEW EWJET XKernelSE X2.2ex (SonyEricsson Look n feel): X10x.2.1.B.0.1.EWJET.XKernelSE.X2.2ex - http://www.mediafire.com/?9w3n3jejkj67xw4

or

[+]NEW EWJET XKernel Gingerbread (+ ADW Launcher v136 + Boat Browser v2.3) Version X2.2ex: X10x.2.1.B.0.1.EWJET.XKernelGinger.fll.X2.2ex - http://www.mediafire.com/?ejo9oyg0b84i9ma - For this version you don't need to choose between web browsers and launchers. Go directly to step 4.

2 - Choose between these Launchers bellow and flash through xRecovery, after that proceed "wipe dalvik cache", fix permissions and reboot

[+] ewX.ADW.Launcher.136 - http://www.mediafire.com/?4jq2jd479wn3sn0 - (Recommended)

or

[+] ewX.ZeamEx v2.8.8 - http://www.mediafire.com/?gjtlb2453t86um3 - (Recommended)

or

[+] ewX.LauncherProEx v0.8.6 - http://www.mediafire.com/?avf4zk5xvv5p5ed

or

[+] ewX.GoLauncherEx v2.3.8 Final - http://www.mediafire.com/?40chldxybg0qpnd

or

[+] ewX.R3DEx v0.9.8.3 - http://www.mediafire.com/?hsfh4b2v4cbaq7c

or

[+] ewX.ArcEx - http://www.mediafire.com/?72t1ep5o1xto1ux

3 - Choose your Web Browser and flash through xRecovery and reboot

[+] Maxthon Web Browser v2.2.1 - http://www.mediafire.com/?aw34h7nn6nhnqd6 - (Recommended)

or

[+] Boat Browser Mini v2.4 - http://www.mediafire.com/?t76ndbxx10iyrd8 - (Recommended)

or

[+] Dolphin Mini Web Browser - http://www.mediafire.com/?ejs3ufqn753yjky

or

[+] Opera Mini 6.1 Web Browser - http://www.mediafire.com/?17gzw1esa3glaep

4 - Start Link2SD and reboot

5 - Link the desired applications to Link2SD and reboot

6 - Choose Kernel Patches to flash through xRecovery, but first wipe dalvik-cache and fix permissions.*

Modded Kernel: zKernel or DooMKernel or FreeKernel by erickwill | 2.6.29 - NEW BOOT SCREEN - Added some baba-baba's files to fix bb issues (Thanks to baba-baba)

[+] FINAL and STABLE REALEASE modded by EW (no WLOD and still performance improved) - ewX.tweaks.xkernel.X9Z1e - extreme - zKernel - details - (15.07.2011 - reloaded improved version) for .67 baseband - http://www.mediafire.com/?kx955qfh2cnbkb1 - (thanks to Z)

or

[+] FINAL and STABLE REALEASE modded by EW (no WLOD and still performance improved) - ewX.tweaks.xkernel.X9Z1 - zKernel - details - (15.07.2011 - reloaded improved version) for .67 baseband - http://www.mediafire.com/?lvcmg1ck2euyjma - (thanks to Z)

or

[+] FINAL and STABLE REALEASE modded by EW - ewX.tweaks.xkernel.X9i1x - DooMKernel X series - details - (23.07.2011) for .67 baseband - http://www.mediafire.com/?97xtx9x0suq142c - (thanks to DoomLord)

or

FINAL and STABLE REALEASE modded by EW - ewX.tweaks.xkernel.X9is - DooMKernel S series - details - (19.07.2011) for .67 baseband - http://www.mediafire.com/?oxhb3a9gt8q3ocz - (thanks to DoomLord)

or

FINAL and STABLE REALEASE modded by EW (no WLOD and still performance improved) ewX.tweaks.xkernel.X9g1 - FreeKernel 363 for .67 baseband - http://www.mediafire.com/?yp4ge0yjiddj3cf - (thanks to tkymgr)

*ATTENTION:

A few considerations before install the patch:

- Go to SDCARD and make sure to delete "scriptz" folder.

- Enter in Xrecovery mode and "Wipe dalvik cache"

- Install the patch

- Reboot

- Go to Link2SD and under properties / more proceed "Link dalvik-cache files" and "Market Fix"

- Reboot again and you are ready to go. ;)

7 - Go to Link2SD and re-link dalvik-cache files.

[+]For additional languages support please apply this patch - http://www.mediafire.com/?8xas5clnbdv5c5a

Please make sure you flash.. from .54 to .67 baseband

ATTENTION

: BEFORE POST A BUG "MAKE SURE THAT IS REALLY A BUG" TRYING TO REPRODUCE IT AT LEAST TWICE. WHEN REPORTING A BUG, PLEASE PROVIDE ALL DETAILS AS POSSIBLE. AND ALWAYS USE SEARCH BEFORE TO CHECK IF YOUR REQUEST/QUESTION/BUG WAS ALREADY RESPONDED.

A huge THANKS to Z for develop such great kernel!

Have fun!