The Calypso GSM modem part of the GTA02 phone has its own NOR flash of 4 MiB.
flashdump.bin is a dump of this flash, taken from my GTA02.  (I've used
OsmocomBB tools to make this dump, as it was taken before I started writing my
own fc-loadtools.)  This is the state of the Calypso NOR flash as it came from
the factory: my GTA02 never had a SIM card in it, and never made or received a
call.

The first 3.5 MiB of the flash contains the moko10 firmware image: the first
2250132 bytes match gsm_ac_gp_fd_pu_em_cph_ds_vc_cal35_ri_36_amd8_ts0-moko10.m0
byte for byte (with FFs in bytes not covered by any of the S-records), and then
blank flash (FF padding).  The more interesting part is the FFS (flash file
system), contained in the last 512 KiB.  In there one can see the IMEI of this
particular GTA02 (354651019615840), as well as the additional "Serial number"
which Om-Inc assigned besides the IMEI: 8A9101242.  (For most GSM phones the
IMEI *is* the serial number, but apparently Om-Inc saw things differently.)

I am releasing this flash dump image primarily for the purpose of illustrating
what Closedmoko's particular version of TI FFS looks like.  It is instructive to
compare it against Pirelli's FFS, which has the same format but stores quite
different content.  See the mpffs-tools package in the ../FreeCalypso directory
for a document describing the FFS format and a set of tools for listing and
extracting files from FFS images.

Note where and how the IMEI and the RF calibration data are stored.