[YU Yureka General] SkandaH:
Now CM appear to have disabled their links to official roms, updates & kernels for older builds, I've mirrored them all on AndroidFileHost and put the links in one post so that they're easy to find.

There are different files for each ROM: signed fastboot flashable zips, signed zips, OTA incremental update zips., boot-debuggable images and stock recovery images.

Signed fastboot flashable zips: These contain the complete rom and can overwrite everything including your data partition. These cannot be flashed via recovery - extract their contents and flash via fastboot. Due to changes in bootloader, don't use them to upgrade from CM 11S to CM 12S or downgrade from CM 12S to CM 11S.

Signed zips: Normal recovery-flashable zips that contains just the system and kernel (they won't overwrite your data partition).

OTA incremental update zips: These are recovery-flashable zips that update your rom to a newer version. To check which version you are running, look at the ro.build.version.incremental line in your /system/build.prop file and then update incrementally.

Boot-debuggable images: These are boot images (kernels) that enable adb root and the developer menu options. To be flashed via fastboot.

Stock recovery images: These are stock recovery images which are recommended for applying OTA incremental update zips. To be flashed via fastboot.

NOTE: Both Yureka & Yureka Plus share same firmware, but don't use pre-cm-12.0-YNG1TAS34J builds on Yureka Plus - the device will be soft-bricked!

Signed fastboot flashable zips

cm-12.1-YOG4PAS8A4-tomato-signed-fastboot-a7a306cebd.zip

cm-12.1-YOG4PAS3JM-tomato-signed-fastboot.zip

cm-12.0-YNG1TAS34J-tomato-signed-fastboot.zip

cm-12.0-YNG1TAS1K0-tomato-signed-fastboot.zip

cm-12.0-YNG1TAS0W0-tomato-signed-fastboot.zip

cm-11.0-XNPH05Q-tomato-signed-fastboot.zip

cm-11.0-XNPH52O-tomato-signed-fastboot.zip

Signed zips

cm-12.1-YOG4PAS8A4-tomato-signed-224c88c4ef.zip

cm-12.1-YOG4PAS3JM-tomato-signed.zip

cm-12.0-YNG1TAS34J-tomato-signed.zip

cm-12.0-YNG1TAS1K0-tomato-signed.zip

cm-12.0-YNG1TAS0W0-tomato-signed.zip

cm-11.0-XNPH05Q-tomato-signed.zip

OTA incremental update zips

YOG4PAS8A4 from YOG4PAS3JM: cm-tomato-04864afef4-to-5242dd42b2-signed.zip

YOG4PAS6ZA from YOG4PAS3JM: cm-tomato-04864afef4-to-f758a6e288-signed.zip

YOG4PAS3JM from YNG1TAS34J: cm-tomato-c991cd279d-to-04864afef4-signed.zip

YOG4PAS3JM from YNG1TAS1K0: cm-tomato-00b2e333e8-to-04864afef4-signed.zip

YNG1TAS34J from YNG1TAS1K0: cm-tomato-00b2e333e8-to-c991cd279d-signed.zip

YNG1TAS1K0 from YNG1TAS0W0: cm-tomato-56deeca328-to-00b2e333e8-signed.zip

XNPH05Q from XNPH52O: cm-tomato-efbb5514a1-to-9828f8e9cc-signed.zip

Boot-debuggable images

cm-12.1-YOG4PAS8A4-tomato-boot-debuggable-8bc066a691.img

cm-12.1-YOG4PAS3JM-tomato-boot-debuggable.img

cm-12.0-YNG1TAS34J-tomato-boot-debuggable.img

cm-12.0-YNG1TAS1K0-tomato-boot-debuggable.img

cm-12.0-YNG1TAS0W0-tomato-boot-debuggable.img

cm-11.0-XNPH05Q-tomato-boot-debuggable.img

cm-11.0-XNPH52O-tomato-boot-debuggable.img

Stock recovery images

cm-12.1-YOG4PAS8A4-tomato-recovery.img

cm-12.1-YOG4PAS3JM-tomato-recovery.img

cm-12.0-YNG1TAS34J-tomato-recovery.img

cm-12.0-YNG1TAS1K0-tomato-recovery.img

cm-12.0-YNG1TAS0W0-tomato-recovery.img

cm-11.0-XNPH05Q-tomato-recovery.img

cm-11.0-XNPH52O-tomato-recovery.img