"If you own a Rogers BlackBerry Bold then you might want to read this. Rogers and RIM have officially release a new OS upgrade for the Bold (4.6.0.162) which will hopefully fix a few issues such as drop calls, memory leaks, battery life, etc.
The Rogers Bold ships with OS 4.6.0.125 so this is quite the upgrade. You can download the operating system directly from RIM’s website here then install the package and open up Desktop Manager it should update from there. Make sure you do a backup before installing the software (in case for some reason you loose everything)." via blackberrysync.com