This is the latest Firmware of Samsung i9003 Galaxy Sl and other dev's focus here for its development..
You will be instructed by this page for you to have this firmware without using your kies..
i9003XXKPE Firmware - clickhere
i9003XXKPQ Firmware - clickhere
1. Firstly, Download the 2.3.5 firmware from Przekret's thread
2. Run Odin3 v1.83
3. Set your phone to download mode : Press Volume down + OK first, then hold Power button.
4. Connect your phone, you should see Odin shows your phone is Added with COM number.
5. Click PIT button and select this file: latona_20110114.pit
6. You should see Re-Partition, Auto Reboot and F. Reset Time checked.
7. Click PDA button and select this file: CODE_I9003XXKPE_CL409735_REV08_user_low_ship.tar
8. Click PHONE button and select this file: MODEM_I9003XXKPE_REV_00_CL1041909.tar
9. Click BOOTLOADER button and select this file: APBOOT_I9003XXKPE_CL409735_REV08_user_low_ship.tar
10. Click CSC button and select this file: GT-I9003-CSC-MULTI-OXAKPE.tar
11. Click Start button to flash these files to phone.
12. Do not touch anything till you see PASS on the program window.
13. Turn off the phone and set it back into download mode once you get an initial first boot to homescreen. Do not set up anything, Just power off and set to download mode.
Note: You only need to flash once to XXKPE before proceeding to XXKPQ
14. In Odin, press Reset button. Re-partition should be unchecked automatically.
15. Select file I9003XXKPQ_I9003XXKPQ_I9003SERKPQ_HOME.tar as PDA
16. Click on Start to flash XXKPQ PDA to phone
17. Once you have flashed, after the phone started up, press *#1234# and check your PDA,Phone and CSC, everything should ended with KPQ
18. Factory reset and enjoy