I rooted my cosmo the "official" way, ie installed the rooted kernel in one of the slots (should be EMPTY_NORMAL_BOOT_3 or EMPTY_NORMAL_BOOT_4). The problem is that the SIM card is only detected in normal (non-rooted) android, not in the rooted version.
Can it be that lk does initialize the modem only when booting from the normal android boot partition?