I went to the website you directed me to, selected my phone, Android 5839i UK, and it selected this file:
I downloaded this to my PC, I formatted (FAT32) on the 2G micro SD card, then copied this file to the SD card, did not unzip.
On startup of the phone i selected "apply update from sdcard".
It took a few seconds while it said
-- Install /sdcard ...
Finding update package...
Opening update package...
E:Can't open /tmp/sideload/package.zip
Any more suggestions please?
thanks in advance