int_osx_receive_prim() in gsm-fw/gpf/osx/osx.c: there was an error in the reconstruction of this function from disassembly in the logic that implements special handling for MPHC_RXLEV_REQ messages. The code is now fixed to properly match what the binary object version does; with this fix the firmware now performs the power measurement phase correctly and the initial network registration succeeds.

/*
 * I like using u8/u16/u32, but they don't seem to be defined anywhere.
 * So I solve the whole portability problem by defining them myself.
 */

typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;

typedef signed char s8;
typedef signed short s16;
typedef signed int s32;