make Z370 (and maybe other models) to work in HSDPA mode

[sdroamt]

Hi all,

WARNING: this instructions can brick your phone and/or void your phone warranty
PROCEED AT YOUR RISK

tested with Z370XXGI1 firmware

In order to go in "proto mode" press:

*#77686#

(if the proto mode do not appears then delete and re-press the "last" #)

in order to go in the Protocol value settings press:

1

in order to go to the 2nd "value settings" page press:

volume down

In this page there are three values:

1. 3g RRC VER. : R99
2. SGSNR VER : R99
3. MSCR VER : R99
...
...

in order to change "3g RRC VER." to R5 press:

1

in order to change "SGSNR VER" to R5 press:

2

in order to change "MSCR VER" to R5 press:

3

in order to save your changes press:

the right soft key

restart the phone (turn it off-on);

when the phone restarts, if you connect to internet and if the network does support it,
the connection should be HSDPA (no icon does appears but if you do a big download
you should note a speed higer than 384 kbps).

nice connection to all
Sandro