Thread: About 37xx converted to 34xx satellites reception accuracy

Originally Posted by Alviora

in 37xx - mediatek mt3328 (1023-BVDL CQJKR2 revision is different, depending on the revision of the motherboard psb).
in 34xx - NL5500L 1CM00X3 with integrated Bluetooth ( NaviLink™ 6.0 Solution: NL5500)

I saw a both modification of original 34xx, 35xx with different version of GPS for Texas Instrument and MTK. In Nuvi37xx it is too but I do not remember how many. Also the first sign for MTK chipset is next files in filesystem:

.System\GPS\ARC.BIN
.System\GPS\BEE.BIN
.System\GPS\mt.nvm

In SW source code there are also references to both module: NL5500 and MT3328 (search for unicode string us usually)...

For interesting we may have the next PCB modifications:

V X
8 G B - 1 G B - 2 G B - 4 G B
O 3 6 - O 3 5 - O 3 7 - O ?
M M - M A - M ? - only old version of SW
D A - D S - D C - D W - D W H - D W N - D I - D ?
T M - T C - T W - T Y C - T ?
P P - P A - P ? - only old version of SW
H P
G M - G T - G T L - G T ?

Last Nuvi 2xx5 is much steeper than the 3ххх - it have 16 GB on board