Official support from BlackBerry (now owned by OnwardMobility/Cylance) is long gone. However, the carrier-specific OS files are still archived.
: General optimizations for better battery life compared to OS 7.0. CrackBerry blackberry bold 9900 software update 7.1 download
Finding official software downloads for the BlackBerry Bold 9900 Go to product viewer dialog for this item. blackberry bold 9900 software update 7.1 download