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NovAtel Firmware and Software Chapter 5
AG-STAR User Manual Rev 2 40
5.4.1 Working with S-Records
• Records beginning with S0, S5 and S7 should be passed to the receiver directly using the
SOFTLOADSREC command. These records contain meta data about the firmware image.
• Records beginning with S3 form the actual firmware image and can be converted to SOFTLOADDATA
binary commands. Aside from the header, each pair of characters forms the ASCII representation of
binary byte. The format is as follows:
• Multiple S3 records can be packaged into a single
SOFTLOADDATA command as long as the data
from one S3 record follows immediately after the previous record, up to a maximum of 4096 bytes of
data. That is, the address must equal the previous address plus the previous data length. The "offset"
field remains the address of the first S3 record and the "data" and "data length" are updated to include
the new data.
• The hex file data may contain many gaps and jumps. For example, in most NovAtel hex files data for
address 0x000_00000 is stored near the very end of the file.
5.5 Upgrading Using the AUTH Command
The AUTH command authorizes the enabling (unlocking) of model features. The AUTH command is used to
upgrade a new receiver model, available with the same firmware version as the current model. This
command only functions with a valid auth-code assigned by NovAtel Customer Support
.
The upgrade can be performed directly through the NovAtel Connect command line or from any other
communications program.
5.5.1 Upgrade Procedure
1. Power up the receiver and establish communications.
2. Issue the
LOG VERSION command to verify the current model, firmware version and serial number
(refer to Section 5.2, Authorization Code on page 35 for instructions on obtaining).
S3 LL AAAAAAAA DDDDDDDD...DDDDDDDD CC
Check Sum. One's compliment of all other
bytes
Little Endian Data. These bytes are copied into the "data" field of the
SOFTLOADDATA command
4 - Byte Address. Set this as the value of "offset" in the SOFTLOADDATA command
Length. This is the hexadecimal number of character pairs to follow in the record. This value minus
4 bytes for the address and 1 byte for the check sum is copied into the "data length" field of the
SOFTLOADDATA command
Header
Refer to Section 5.3.1.1, Types of Firmware Files on page 36 for details on updating versus
upgrading.