For two straight months now the rate of upgrades to OS 5.0 has remained unchanged. January’s rates of OS 5 use on the devices that can be upgraded from OS 4.x are almost unchanged from November, and in a few cases even down. Given this stability it seems unlikely to expect any further change in these numbers in the future. (The overall use of OS 5 or higher has continued to increased as RIM is no longer selling devices with OS 4.6 or 4.7).
| Device | OS 4.X | OS 5.0 |
| 8350i | 89.3% | 10.7% |
| 8520 | 51.4% | 48.6% |
| 8900 | 55.7% | 44.3% |
| 9000 | 57.0% | 43.0% |
| 9500 | 46.6% | 53.4% |
| 9530 | 10.7% | 89.3% |
| 9630 | 11.5% | 88.5% |
This data comes from January downloads of Pixelated, the second most popular game in BlackBerry AppWorld.