[Advantage X7500, MDA Ameo ROM Development] sergiopi:
HOW TO UP- AND DOWN- GRADE THE SPL, FROM 1.2 TO 3.5 AND VICEVERSA

TO UPGRADE 1.2 TO 3.5: Flash ATHENA PROIECT 4.0 First, then choose and flash the SPL 3.5 ROM you like

TO DOWNGRADE FROM 3.5 TO 1.2 INSTRUCTIONS HERE

NEWEST ROM

WM6.5 Build 23060 [v1.02RV][v1.02] 07/10/2009 X7500 ROM (SPL 3.5)

http://xdaforums.com/showthread.php?t=555881

ATHENA PROJECT (AP) TEAM

Athena Project Black Dual by PK 3.0 (SPL 1.2)

http://xdaforums.com/showthread.php?t=346221

AP 3.0 Dual for new SPL (SPL 3.5)

http://xdaforums.com/showthread.php?t=386604

Athena Project 4.0 (SPL 3.5)

http://xdaforums.com/showthread.php?t=387409

Athena Project 5.0 Beta (SPL 3.5)

http://xdaforums.com/showthread.php?t=394016

IRUS

AP4 VANILLA 4 SPL 1.2,

Windows Mobile 6.1 for (SPL 3.5 and 1.2), Vanilla, Lite, Full

HTC ROM modded (SPL 3.5)

http://xdaforums.com/showthread.php?t=390328

Modded Taxist ROM (beta), (SPL 3.5, SPL 1.2)

http://xdaforums.com/showthread.php?t=397864

Ultra Vanilla (SPL 3.5, SPL 1.2)

http://xdaforums.com/showthread.php?t=402654

English Translation of MUTOU (CN) ROM (SPL SPL 3.5 and 1.2)

http://xdaforums.com/showthread.php?t=404639

First FIX of Sogarth base ROM (SPL 3.5 and 1.2)

http://xdaforums.com/showpost.php?p=2387957&postcount=53

Sogarth's Base Vanilla Rom (SPL 3.5 and 1.2)

http://xdaforums.com/showthread.php?t=410139

Sogarth's Base Vanilla Rom 0 MB Page Pool TEST (SPL 1.2)

http://xdaforums.com/showpost.php?p=2439881&postcount=98

UPDATE Loop fix - NEW 0MB PagePool rom (SPL 3.5 and 1.2)

http://xdaforums.com/showthread.php?t=414063

TAXIST

Ultra Lite ROM (SPL 3.5)

http://xdaforums.com/showthread.php?t=396165

Newest Ultra Lite ROM, from X7510 (SPL 3.5)

http://xdaforums.com/showpost.php?p=2373623&postcount=159

MATRIX3937

German WM6.0 ROM (SPL 3.5)

http://xdaforums.com/showthread.php?t=399938

朽木头

Chinese WM6.1 ROM, (SPL 3.5 and 1.2)

http://xdaforums.com/showthread.php?t=400384

Rapidshare mirror of the latest 3.5 spl mutou (chinese) WM6.1 b 20226.1.3.0.rar

http://rapidshare.com/files/125091372/mutou_SPL3.5_WM6.1_b20226_1.3.0.rar.html

WARNING: Eaglesteve found a virus in the SPL 1.2 version of the mutou ROM. Remember, check carefully the files you download!

Michyprima

Italian WM6.1 ROM, (SPL3.5 and 1.2)

http://xdaforums.com/showthread.php?t=404055

Italian WM6.1 ROM, 1.15 (SPL3.5 and 1.2)

http://xdaforums.com/showthread.php?t=40765

WWE WM6.1 ROM, 1.56 Diamond Edition (SPL3.5 and 1.2)

http://xdaforums.com/showthread.php?t=408300

WWE WM6.1 ROM, 1.60 Full Edition (SPL3.5 and 1.2)

http://xdaforums.com/showthread.php?t=409528

WWE WM6.1 ROM, 1.79.2F Full Edition (SPL3.5 and 1.2)

http://xdaforums.com/showthread.php?t=411371

WM6.1 WWE 1.88F MiChY (SPL 3.5 and 1.2)

http://xdaforums.com/showthread.php?t=411371

WM6.1 WWE 2.18D MiChY (SPL1.2)

Windows Mobile 6.1 Diamond Edition CE OS 5.2.20273 (Build 20273.1.3.3)*

http://xdaforums.com/showthread.php?t=411371

WM6.1 WWE 2.14D Light MiChY (SPL1.2)

http://xdaforums.com/showthread.php?t=417053

ROM WM6.1 MULTILANG 3.0D MiChY (SPL 3.5)

Windows Mobile 6.1 Diamond Edition CE OS 5.2.20273 (AP4) (Build 20273.1.3.3)*

http://xdaforums.com/showthread.php?t=411371

ROM WM6.1 MULTILANG R4 MiChY (SPL 3.5 and 1.2)

Windows Mobile 6.1 Diamond Edition CE OS 5.2.20273 (AP4) (Build 20273.1.3.3)*

http://xdaforums.com/showthread.php?t=411371

ROM WM6.1 MULTILANG 5.1 MiChY (SPL 3.5 and 1.2)

Check the txt file and mirrors

http://xdaforums.com/showthread.php?t=411371

ROM WM6.1 MULTILANG R6.0 MiChY (SPL 3.5) Updated 05/11

Check the txt file and mirrors

http://xdaforums.com/showthread.php?t=411371

ROM WM6.1 MULTILANG R6.1 Manila Edition (SPL 1.2 and 3.5) Updated 22/11

http://xdaforums.com/showthread.php?t=411371

ROM Windows Mobile 6.5 Professional CE OS 5.2.21500 (Build 21500.5.0.0)

Ver 6.5 Manila Edition MiChY

http://xdaforums.com/showthread.php?t=411371

ROM Windows Mobile 6.5 Professional CE OS 5.2.21500 (Build 21500.5.0.0)

Ver R1 Clean Edition MiChY

http://xdaforums.com/showthread.php?t=454666

Sogarth

Base ROM WM6.1 from X7510 and DIAMOND

http://xdaforums.com/showthread.php?t=406348

dheerajjuneja

HTC official WWE WM6 ROM, modified to have Blackberry Connect working (SPL 3.5)

http://xdaforums.com/showpost.php?p=2414269&postcount=25

Michyprima's WM6.1 ROM, modified to have Blackberry Connect working (SPL 3.5)

http://xdaforums.com/showthread.php?t=410569

AVENGERPENGUIN

WM6.5 Build 23060 [v1.02RV][v1.02] 07/10/2009 X7500 ROM (SPL 3.5)

http://xdaforums.com/showthread.php?t=555881

CMONEX

SPL 3.5->1.2 downgrader

After AP4 flashing only SPL 3.5 ROM were allowed. With this tool you can revert the SPL back to 1.2, to flash any other ROM (also the ORIGINAL, from HTC/T-Mobile/Dopod/...)

http://xdaforums.com/showthread.php?t=405604