I have installed CM12 Falcon nightly build on my Moto G 1st Generation XT1033 after installing CM12 I tried to update using Settings->About Phone->Cynogenmod updates first time it successfully installed CM updates but after that I am not able to install latest updates.

The system update is crashing in Recovery mode message saying unable to install from zip

What should I do?

Note : I am using TWRP Recovery and not CM Recovery.

  • Did you uncheck the option to Update Recovery With System Updates in CM Developer Settings? – Tamoghna Chowdhury Oct 30 '15 at 3:10
  • Do I have to charge my recovery for that??? – Akshay Khale Oct 30 '15 at 5:02
  • Did you mean "change" instead of "charge"? – Tamoghna Chowdhury Oct 30 '15 at 6:52
  • Sorry my bad, it's change – Akshay Khale Oct 30 '15 at 7:24
  • There should be a recovery log in the twrp or the root folder of your sd card. can you upload that so we can check the problem? – Tamoghna Chowdhury Oct 30 '15 at 7:26

Here's a stopgap measure to keep your phone updated:

1) Nandroid backup. Necessary

2) Get latest CM12 falcon zip.

3) Copy zip to SD card.

4) Reboot to TWRP.

5) Wipe /cache and /system.

6) Dirty-flash ( common parlance for flashing without wiping userdata) the zip.

7) Cross your fingers and hope it works.

8) If it doesn't, there's your Nandroid backup. Now try a clean flash (in step 5, also wipe /data.

9) It should work (it's like installing a new ROM).

10) The next time onwards, download the OTA zip yourself, compare checksums of the files, copy the OTA zip to your SD card, flash the OTA zip without wiping anything.

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