How to install CyanogenMod 7 for Samsung Captivate

INSTRUCTIONS:

Latest version: http://mirror.teamdouche.net/?device=captivatemtd

Check the md5sum if you want to be sure that the download worked (different OSes have different programs that do md5, on ubuntu it is md5sum that you run against the zip you download and compare to the md5sum number shown on the download website). ROMManager does this automatically for ROMs you download via ROMManager.

- First time flashing CM 7 to your Captivate (or coming from another ROM)?

Easy way:

1. Start with a rooted Eclair/Froyo running Eclair/Froyo Bootloaders (do not ask us how to do this).
2. Install ROMManager Premium.
3. Flash ClockworkMod Recovery. Pick Captivate (MTD) (ignore the warning about not having an official, pick ClockworkMod 2.x).
4. Make sure you can reboot into ClockworkMod recovery from ROMManager. Reboot and get back into ROMManager Premium.
5. Choose download ROMs.
6. Pick the CyanogenMod Nightlies.
7. Check the Google Apps addon.
8. Check Backup current ROM!
9. Check wipe data, cache, dalvik cache.
10. Let ROMManager finish the installation.

Harder way:

1. Make sure you're running a Eclair/Froyo Firmware (2.1 or 2.2) and Eclair/Froyo Bootloaders!
2. Root your device and install ClockworkMod Recovery.
3. Do a Nandroid backup!
4. WIPE (wipe data/factory reset + wipe cache partition)
5. Install the ROM from internal sdcard using ClockworkMod Recovery
6. Optionally install the Google Addon (through ROMManager is easiest)

- Upgrading from earlier CM7?

ROM Manager method:

1. Install ROMManager Premium.
2. Flash ClockworkMod Recovery. Pick Captivate (MTD) (ignore the warning about not having an official, pick ClockworkMod 3.x).
3. Choose Download ROMs.
4. Pick the CyanogenMod Nightlies.
5. Check the Google Apps addon.
6. Check Backup current ROM!
7. Check wipe cache, dalvik cache.
8. Let ROMManager finish the installation.

Clockwork Mod method:

1. Download and push the ROM zip file to the sdcard.
2. Reboot into recovery.
3. Do a Nandroid Backup!
4. Install the ROM zip from sdcard (your Google apps will be backed up automatically)

There are no Google Apps bundled with CM ROMs, because Google asked Cyanogen to remove copyrighted apps. After flashing the rom, don't forget to flash Google Addon package if you want it. ROM Manager will allow you to flash it if you just go into it and after flashing the ClockworkMod recovery for MTD devices, choose Download ROMs, and pick Google Apps.
SOURCE