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Chapter 6
•
AT unsolicited response codes
3500782-0001 Revision E
Code
Text
Explanation
FTP Management
20
FTP hookup fail
Connection to FTP server failed. Problem could be server unreachable or
specified IP address or server name invalid, or connectivity failure.
21
FTP login fail
FTP username or password incorrect
22
FTP 'type' fail
Could not establish “binary” mode.
23
FTP 'cwd' fail
Could not change to working directory on FTP server.
24
FTP data connection fail
Could not establish an FTP data connection with the server.
25
FTP 'nlst' fail
Could not get list of files in current FTP server directory. Directory may
be empty.
26
FTP xfer command fail
Could not initiate data transfer on an established connection. May be
caused if filename not found.
27
FTP found no filename
Could not find a filename in the current server directory.
28
FTP local file read/write fail Error while writing downloaded file to UT flash or reading upload file
data.
29
FTP socket fail
Error while reading or writing FTP data socket.
30
FTP completion error
Error while closing the current FTP connection.
31
FTP xfer timed out
FTP client timed out waiting for socket ready (read or write), e.g. due to
loss of connectivity during transfer.
_IGETFW
40
File in use, cannot
download
The file to be downloaded is the same (by name) as the image currently
in use.
41
Starting immediate
update…
Normal success. File downloaded successfully, now starting immediate
update.
42
Complete
File listed in the response successfully downloaded to the UT
43
Downgrade disallowed
Downgrade to lower release blocked to protect hardware
_IUPDFW
50
New firmware file not
found
Could not find filename specified in upgraded control file
51
New firmware file corrupt
Firmware file failed checksum test.
52
New firmware file failure
The new firmware failed to run or failed to acquire the network and the
unit fell back to the old release.
53
Upgrade admin file error
Problem with local file manipulation during upgrade process
54
Upgrade status file error
Problem with local file manipulation during upgrade process
_IGETFILE
60
Can't overwrite protected
file
File specified in AT command was ‘config.txt’, ‘config.chk’,
‘config_bk.txt’, ‘config_bk.chk’
_IUPDCFG
70
Can't use reserved file
Attempt to use one of protected config files as the new config.txt file.