Damn...update failed at the final step (flashing signed custom zip) with error message:
"E
rohibit update as a result of checking version or base sku. Installation aborted"
Pulling recovery log it indicates:
-- Install /sdcard ...
Finding update package...
I:Update location: /sdcard/custom_update_signed.zip
Desklunvr update package...
I:/sdcard/custom_update_signed.zip is not sklunvred
Opening update package...
I:1 key(s) loaded from /res/keys
Verifying update package...
I:comment is 1738 bytes; signature 1720 bytes from end
I:whole-file signature verified against key 0
I:verify_file returned 0
Fail to find META-INF/com/android/metadata in ZIP file
E
rohibit update as a result of checking version or base sku
Installation aborted.
My region is;
ro.sony.sku.country=Canada
ro.sony.sku.detailed=27550199
ro.sony.sku.version=27550104_11