Research & Development
APPENDIX_E Firmware
Upgrade
If you want to upgrade firmware online, you should make sure the modem chip is
"ZD1051A" and the ROM is "Intel Flash TE28F800".
If uModem ROM code driver have been well installed, hyper terminal should have
a new USB com port. Open this com port. Issue AT can get response then driver has
been well installed.
Update procedure:
a. For ZD1051A ROM code mode:
Issue
“ATF”
: select
“4”
for
“Intel flash”
.
Issue
“ATUPX”
: select
"Y"
. After
"$"
has appeared, use
XModem
to send file
(3JU*****.HEX)
with kernel.
b. At flash modem code mode:
b.1 Update modem file only:
Issue
“ATUPX”
: select
"Y"
. After
"$"
has appeared, use
XModem
to
send file
(3JU*****.FSH)
without kernel.
b.2 Update modem with kernel changed:
Issue
“ATBZYX”
.
Issue
“ATUPXK”
: select
"Y"
. After
"$"
has appeared, use
XModem
to
send file
(3JU*****.HEX)
with kernel.
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Revision 1.0
2003/6 From 3JTech