[Sony Xperia S, Acro S, Ion] ganeshbiyer:
UNLOCKED BOOT LOADERS ONLY

MIUI V5 is still in the Beta stages and very much a Work In Progress.

You are welcome to post all your view at en.miui.com under this thread

[UNOFFICIAL ROM] MIUI V5 for Xperia ION

About LATEST BUILD

MIUI Android V5 3.11.1 + CM10 FXP235

CREDITS

MIUI China For Base ROM

MIUI Android UK for Translations

Team FXP

Team Cyanogenmod

LoLaTiOn (Helping in Porting)

Lens_flare (For his MIUI porting GUIDE)

OFFICIAL ENGLISH SITE

http://en.miui.com/

CHANGE LOG

3.4.12 - Official Changelog

3.4.19 - Official Changelog

3.4.26 - Official Changelog

3.5.10 - Official Changelog

3.5.17 - Official Changelog

3.5.24 - Official Changelog

3.5.31 - Official Changelog

3.6.7 - Official Changelog

3.6.14 - Official Changelog

3.6.21 - Official Changelog

3.6.28 - Official Changelog

3.7.5 - Official Changelog

3.7.12 - Official Changelog

3.7.19 - Official Changelog

3.7.26 - Official Changelog

3.8.2 - Official Changelog

3.8.9 - Official Changelog

3.8.16 - Official Changelog

3.8.23 - Official Changelog

3.9.6 - Official Changelog

3.9.13 - Official Changelog

3.9.20 - Official Changelog

3.9.27 - Official Changelog

3.10.11 - Official Changelog

3.10.18 - Official Changelog

3.10.25 - Official Changelog

3.11.1 - Official Changelog

3.11.8 - Official Changelog

ROM Changelog

INSTALLATION PROCEDURE

Recovery is needed

Updating Previous MIUI installation

Flash MIUI

Restart Phone

Boot into recoveryFlash Google Apps 4.1.2

(Do not flash Google Apps immediately after flashing the ROM)

Installing MIUI on another ROM

Factory reset

Flash MIUI

Restart Phone

Boot into recovery

Flash Google Apps 4.1.2

(Do not flash Google Apps immediately after flashing the ROM)

DOWNLOADS

Google APPS

(Install 4.1.2 Gapps only)

Google Apps

Stripped Down Google Apps (Recommended)

Miuiandroid Google Apps (New Smaller Google Apps Package)

OLDER ROMS

Miui_Ion_3.4.12_19042013

Miui_Ion_3.4.19_23042013

Miui_Ion_3.4.26_03052013

Miui_Ion_3.5.10_14052013

Miui_Ion_3.5.17_19052013

MIUI_ION_3.5.24_Multi_Lang_26052013

MIUI_ION_3.5.31_Multi_Lang_02062013

Miui_Ion_3.6.7_Multi_lang_10062013

MIUI_ION_3.6.14_Multi_Lang_19Jun2013

MIUI_ION_3.6.21_Multi_Lang_25062013

MIUI_ION_3.6.28_Multi_Lang_30062013

MIUI_ION_3.7.5_Multi_Lang_07072013

MIUI_ION_3.7.12_Multi_Lang_14072013

MIUI_ION_3.7.19_Multi_Lang_23072013

MIUI_ION_3.7.26_Multi_Lang_28072013

MIUI_ION_3.8.2_Multi_Lang_05082013

MIUI_ION_3.8.9_Eng_09082013

MIUI_ION_3.8.9_Multi_Lang_11082013

MIUI_ION_3.8.16_Eng_16082013

MIUI_ION_3.8.16_Multi_Lang_18082013

MIUI_ION_3.8.23_Eng_16082013

MIUI_ION_3.8.23_Multi_Lang_25082013

MIUI_ION_3.8.23_FXP233_Test

MIUI_ION_3.9.6_Eng_06092013

MIUI_ION_3.9.6_Eng_07092013_FXP235

MIUI_ION_3.9.13_Eng_13092013

MIUI_ION_3.9.13_Multi_Lang_14092013

MIUI_ION_3.9.20_Eng_21092013

MIUI_ION_3.9.20_Multi_Lang_23092013

MIUI_ION_3.9.27_Eng_30092013

MIUI_ION_3.9.27_Multi_Lang_29092013

MIUI_ION_3.10.11_Eng_12102013

MIUI_ION_3.10.11_Multi_Lang_14102013

MIUI_ION_3.10.18_Multi_Lang_20102013

MIUI_ION_3.10.25_Eng_26102013

MIUI_ION_3.11.1_Eng_04112013

MIUI_ION_3.11.1_Multi_Lang_05112013

LATEST ROM

MIUI_ION_3.11.8_Eng_08112013

ADDONS

Miui Camera (Flashable)

Google Camera (Normal Install)

BetterBatteryStats

Noozxoide EIZO Rewire PRO [Pure EARGASM for Audiophiles] Will not work with MIUI Player.

Trickster MOD Kernel Settings

Seeder 2.0.0 entropy generator to provide significant lag reduction

USEFUL LINKS

Tips You Should Know About MIUI V5

Tips and tricks to save the battery and Data (Mobile) on MIUI ROMs

A Comprehensive Guide to Wakelocks

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KERNEL SOURCE

GI_Kernel Sources HERE​