SGS4 Stock Rooted. KitKat Update OTA failure (using triangle away.)

[AC Question]

Ok, so last OTA worked. Here is what i did:

I used triangle away's feature to hide system modified warning
i downloaded the OTA update
I disabled the triangle away fix before installing OTA (like it says to do in triangle away)
Phone rebooted and installed the OTA in CWM
Done.



I tried this today to upgrade from 4.3 to whatever is being pushed by my carrier (kitkat)

this time, when i install the OTA, it reboots to CWM and CWM says "install untrusted zip?" I hit yes, it says install aborted. I hit no, it says same thing.


I have heard others mention this, and were told to restore a stock recovery. I have found instructions to do that here:

How to Install Stock Recovery for the Samsung Galaxy S4 I9500 / I9505

But i dont have a i9500, i have the canadian model, the i337m

Can i still flash the stock recovery image from an i9500? or will i brick something.


also not understanding why i have to do any of this when it worked last time and nothing has changed....maybe because its jumping from 4.3 to 4.4 ... i dunno..



Any advice appreciated, id love to get this OTA. I just dont want roms anymore, only stock. but i want to stay up to date with my android version, and that is becoming tough for me.

thanks.