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List of Tables. 1
1. Introduction. 1
1.1. Document Scope. 1
1.2. Document Audience. 1
1.3. New Features/Enhancements. 1
and Definitions. 1
4. Compatibility. 1
Release Description. 1
5.1. Release Identification. 1
5.2. Software Tools Versions. 1
5.3. Released Files and Download Processes. 1
Changes Description. 1
6.1. Validated Corrections/Improvements. 1
6.2. Interface Changes. 1
7. Troubleshooting.. 1
and Additional Information. 1
2. Abbreviations and
3. Related Documentation. 9
4. Hardware Compatibility. 10
5. Software Compatibility. 10
6. Firmware Release
The scope of this document is the
Firmware 7.52.5.A5 release description for the AirPrime SL808xT. Firmware 7.52.5.A5
is a maintenance release of Firmware 7.52.2.A5.
This release note may be distributed to all direct and indirect
customers and will be posted in the Source.
new Winbond memory W29N01GW
Abbreviations and Definitions
AirVantage Management Services
Access Point Name
3GPP TS 27.010 multiplexing protocol
Circuit Switched Data
Clear to Send
GSM Circuit Switched Data Call
Data Link Connection
Enhanced Data rates for GSM Evolution
Fixed Dialing Number (Phonebook)
General Packet Radio Service
Global System for Mobile communications
International Mobile Equipment Identity
Mobile Country Code
Mobile Network Code
Packet Data Protocol
Public Lands Mobile Network
Subscriber Identity Module
Short Message Service
Universal Integrated Circuit Card
Universal Subscriber Identity Module
Interface Guide for Firmware 7.52
Guide for Open AT Application Framework OS 6.52
SL808x, SL808xT, SL808xBT Product Technical Specification and Customer Design
AirPrime SL808xT, SL808xBT and SL808xBTA Product Technical
Specification and Customer Design Guidelines
SL808xT, SL808xBT Migration Guide
AirPrime SL Series Mechanical Socket
Development Kit User Guide
AirPrime Recovery Mechanism
AirPrime Compatibility List
AirPrime SL8080T, SL8080BT
AirPrime SL8082T, SL8082BT
AirPrime SL8084T, SL8084BT
Open AT Application Framework
Open AT Firmware
Open AT OS
Extended AT Application
eCall Inband Modem, Jamming and WMMP libraries are not available for
Firmware Release Information
Date of generation
Boot loader X-modem
First stage boot loader
NAND 128 MBytes / RAM 64 Mbytes
S/W Tools Name
Binary Update Tool
Upgrade through Developer Studio
Upgrade through Binary Update Tool
Upgrade through X-modem
Applications built with a version before Open AT Application
Framework 2.52 have to be rebuilt with
this Open AT Application Framework.
On AirPrime SL808xT with Firmware 7.50.0.A1, firmware (SIERRA_OAT_FW_752_5_A5_2_FULL_sl808x)
should be upgraded before bootloader (SIERRA_BOOT_S18.104.22.168_sl808x), if .cwe or
.dwl files are used for upgrade. R7.52.5.A5.SL808x_201611030614_2.exe can be
used to recover AirPrime SL808xT in bad state.
For the upgrade procedure, you can refer
In-line help for upgrade procedure through Developer Studio
upgrade procedure through X-modem
This section presents all corrections or improvements
integrated in Firmware 7.52.5.A5.
Issues are sorted by alphabetical order of Impacted Domain.
If AirPrime repeatedly
restarts at power up, it could trigger a fallback of the firmware without
reporting +WDSI:14/17,0 unsolicited indications.
Recovery mechanism", the firmware reverse patch is not installed automatically
after 4 unwanted resets if the reverse patch contains bootloader. AirPrime
should be powered off/on for the fallback to occur.
AirPrime may forward
its device name incorrectly to the AMS server.
AirPrime could fail to
initialize, if files commonly under both nvp folder and nvp-mirror folder are
IMEI programmed by the
customer may be reset to the default firmware setting, due to memory bit-flip
With a special SIM,
occasionally BCH request has not been processed. It makes AirPrime fail to
perform the cell reselection.
AirPrime may restart
due to a conflict of multitask handling.
On rare occasions,
GPIO initialization in the firmware may be unsuccessful and can lead to GPIO
AirPrime doesn’t give
NO CARRIER indication, when data connection is disconnected by unexpected RF
shutdown due to overheat.
cannot be established with "NONE" PPP authentication.
command with a special USIM to AirPrime could make it restart.
File contents under
'.' and '..' folders in the file system cannot be listed.
timer events in the customer application could disturb ADL IFS (adl_fsIntall)
to install new binary files. If the size of the file is big, it would make
AirPrime repeatedly restart.
Installation of AMS firmware/embedded
application delta may sometime fail if the AirPrime is powered-off just after
+WDSI: 14 unsolicited response.
After the AirPrime is
reset, AMS login and password set using AT+WDSS are not displayed
application delta update may fail if GPRS attach is performed bearer is
started right at the point when the AirPrime is trying to perform network
PDP context activation
request to AMS server after patch update is sent without username and
proprietary command) is not functional
SPI block cannot be
subscribed more than with different chip select signal
Installation of a
corrupt firmware or a corrupt embedded application is not blocked by the
firmware, due to lack of CRC check.
WIP bearer start may
fail if the APN requires authentication.
Service status in the
network for +CLIP/+CLIR/+COLP supplementary service is incorrectly displayed
as not provisioned, even if the service is provisioned.
In case of file system
corruption, a recovery mechanism of critical firmware data has been
implemented to secure module being able to power up. While recovering the
module, file system content (files and A&D objects) may not fully
recover. Present Open AT application is not impacted.
event not received if UART2 is attempted to be opened
Call waiting beeps for
an incoming call are not heard during an active call.
AirPrime may restart
during firmware upgrade through AirVantage Management Services.
+CME ERROR: 515 is
received, when an Application is running on AirPrime and +WDSO command is
sent in concatenation with other command from AirVantage Management Services
connect to the AirVantage Management Services when an HTTP connection has
been created using Internet Library.
If RDMS APN is not set
and connection with first customer APN fails, AirPrime doesn't try to connect
with remaining customer APNs. Correct behavior is to try all PDP contexts one
+CLIP response is
returned very late when interrogation of +CLIP status is rejected by network
+CME ERROR: 30 is
returned very late when the activation for call waiting is rejected by
ENS feature using AT+WBHV is not functional.
setting of +SPEAKER is not maintained after AirPrime power cycles.
AT+WPPP command fails
to update password for CHAP/PAP protocol, if it is already set once.
AT+CLCK=”PN”,1,<password> command is executed, ERROR is returned.
AT+WIMEI cannot set
IMEI on AirPrimes with default/blank IMEI.
Deleted LDN phonebook
entries still appear after AirPrime restarts on deleting the LDN phonebook by
Emergency Call 000
Fails with a PIN or PUK locked USIM.
In PDU mode, the
content of stored unsent message is altered after receiving a new message.
AT+CMGD command does
not delete the message properly.
SMS cannot be sent
after the activation of PDP context.
reset while sending lots of SMS in quick succession.
Bridge mode fails in
case of 2 PPP interfaces are bridged
AirPrime is unable to
stop the BUSY tone when an MO call is made to a busy phone number.
AT+CMUT=1 does not
mute the microphone. Instead it mutes the earphone.
On configuring the
GPIO as INPUT using AT+WIOM command and then writing on the INPUT configured
GPIO using AT+WIOW command, the direction on INPUT configured GPIO changes to
No error is received
on subscribing to ADL BUS service, either on already subscribed GPIO or on
GPIO's subscribed as
OUTPUT by using Application may switch its direction to INPUT after calling
message is not displayed when data connection is established on DLC opened on
Sometimes AirPrime is
not able to communicate on the SPI bus.
The volume of the
speaker and microphone do not change for some values of gain of AT+WDGR and
ADL_INIT_REBOOT_FROM_EXCEPTION not received in Dalman if reset is caused due
to Application inserting too many items in queue.
SPI write sometimes
fails when a payload exceeding 90 bytes is written repeatedly in a loop.
On USB port, DD frames
are not received while activating the DATA mode for GPRS session.
On UART CTS pin
becomes logical low on disabling hardware flow control.
Loopback connection on
UART1 results in data loss.
Download of large file
using Developer Studio fails over UART.
After few normal
restarts (due to +WOPEN, +CFUN), AT+WDWL doesn't launch the xmodem
The XMODEM download
over UART can be done only at the baud rate of 115200.
+CGEV indications may
not be reported when cid parameter is present in them.
GPRS detach not
performed with at+cgatt=0.
optional parameters returns +CME ERROR:3.
AirPrime does not
acknowledge LCP-ECHO request leading to disconnection of PPP on Linux OS.
AirPrime restarts when
AT+WIPBR is executed, for GPRS bearer, with combined length of <login>
and <password> higher than 48.
AT port can become
unresponsive when the download XTRA command and the inquiry command are sent
in a short time.
to GPS performance
Emergency call not
possible without SIM or when SIM PIN is locked and PIN is not yet entered.
When a call waiting
indication is seen, AT+CHLD=2 needs to be executed twice to accept the new
call and to put the active call on hold.
User cannot use call
waiting and call conferencing services.
event not sent to the Application when call is BUSY.
When AT+CHLD=0 or
AT+CHLD=1x command is issued, Active call is also disconnected.
When AT+CHLD=0 command
is issued, Active call is also disconnected.
AT+CACM does not
return correct accumulated meter values.
All emergency calls
are directed to 112, instead of the emergency number specified.
AirPrime resets on
dialing a number with 60 or more digits.
When a mobile
originated emergency call is terminated using ATH, sometimes OK is not
received and no further voice call is possible.
During IP connection,
sometimes event ADL_CALL_HANGUP_OK is not received when adl_callhangup() is
called during an active call.
Users with Call
waiting service enabled have difficulty in hearing the ongoing call when a
third call is in waiting.
Emergency Call 000
When SIM is in
"No PIN" or "PIN1 blocked", emergency call can't be made.
Emergency call made
after PUK1 is unlocked gets disconnected automatically after a short duration
AT+CCED=0,8 always returns
99 for channel bit error rate.
<CellId> field value is not reported correctly through CCED
+WIND: 15 is not seen
when there is a change in time zone.
When AT+CSSN=1,1 has
been executed on AirPrime, the supplementary service notification for
“additional incoming call forwarded” ( +CSSU: 10 ) is never received.
AT+CCED=0 leads to
occasional reception of +CME ERROR: 30.
AT+COPS=?, without waiting for response, leads to +CME ERROR 515 for all the
AT commands including the AT command.
+CREG: 2 is not
received on network loss.
SMS ADL callbacks not
always received even if SMS is sent correctly.
On sending the SMS
again after changing the service type from GPRS to GSM (circuit
switched),+CMS ERROR: 515 is received.
reset while sending SMS.
<time> field of
+CCFC is not displayed when <reason> is no reply.
unsolicited responses (+CCWA ) are not received when the ongoing call has
been put on hold.
AT+CCFC=0,4 does not
erase unconditional call forwarding for data call and AT+CCWA=0,0 does not
disable call waiting for data call.
Call Barring Service
incorrect call forward status.
Registration of Call
Forwarding Supplementary service for all asynchronous services, using ATD
command, leads to registration of the service for all tele-services.
Call waiting status,
received with +CCWA indications, is incorrect.
AirPrime displays the
connected line identification presentation information even if
"COLP" is not provisioned.
Call waiting status,
received in +CCWA: indication, is incorrect.
Certain + D
indications are not received even when AT+D=1 has been issued.
Extra responses of
activating call forwarding including that of data, fax are received along
with correct response for speech for BS codes =17(Voice group calling
service) or 18(Voice broadcast service).
notification for “forwarded MT call” (+CSSU: 0) are missing when enabled by AT+CSSN=1.
At times complete
incoming USSD string is not shown with +D indication.
Microphone feedback in
speaker may not change for some values of gain of AT+SIDET
Wrong digital gain of
the speaker in index received if the Gain set in dB mode.
Audio quality may
deteriorate when audio & GPS operations are preformed concurrently.
The DTMF tone is
played locally at speaker when the tone is sent using AT+VTS.
AirPrime indicates to
network that it supports AMR-Wideband (even though it doesn't).
adl_ioGetCapabilitiesList() returns incorrect number of GPIOs (one more than
the actual number of GPIO pins available on the AirPrime).
incorrect GPIO level values after some GPIO write operations.
does not work.
SPI_CS_N may sometimes
be released early, leading to data loss (last byte of SPI data).
With some specific SIM
cards, SIM initialization may sometimes fail.
Software watchdog is
When trying to put a
GDB breakpoint in an Application using a low level interrupt, the breakpoint
isn't reached and AirPrime restarts.
Can't select Band 6
(UMTS800) with AT+WUBS command.
+CIND, reports incorrect signal quality.
Wrong TON of address
for phone number may be received for AT+CLIP command.
The value <Maximum
bitrate DL> in sometimes not set correctly with AT+CGEQREQ command.
This section presents the interfaces that have been modified
since Firmware 7.52.2.A5.
The table containing the operators name has been updated
as per latest TS.25 list (formerly, SE.13) dated September 19, 2016.
For Open AT Developers, please refer to the Troubleshooting Guide
available in Developer Zone before contacting customer support.
For AT developers, please contact customer service for
support and debugging information.
This section presents additional information or restrictions
that must be taken into account regarding Firmware 7.52.5.A5. Issues are sorted
by alphabetical order of Impacted Domain.
After software upgrade has been applied on AirPrime with AMS,
+WDSF read command may return wrong <EraseInfo> information.
Due to time-out, AT commands (like AT+COPS=?) issued over
AMS may return ERROR.
+WDSF read command may
return wrong <EraseInfo> information after a firmware upgrade with AMS
has been carried out. Even the firmware has been re-installed afterwards,
wrong <EraseInfo> information is still available.
AirPrime in CGCLASS CG class cannot connect to the AMS server again, after it
has been disconnected from the previous AMS connection.
QoS setting is reset to the default, when GPRS bearer is
started with a newly created PDP context.
AT+WLCK doesn’t work for PS, PP and PC facilities.
AT+WSVN does not change the IMEI SVN sent to the network
"+WIND:7" indication is not received when SIM
PIN is locked and PIN is not yet entered
AirPrime indicates to network that it supports Fax (even
though it doesn't). This is not expected to impact normal functioning of the
+CDS or +CDSI may not be notified on AirPrime, when PDU SMS are sent to
AirPrime continuously without any time delay.
The terminal response
of the STK command (SEND SS) to the SIM doesn't contain additional
information, including operation code and SS parameters.
Stop playing an audio
stream may fail. Occasionally, it could cause AirPrime to restart.
The API of the
Internet plugin (wip_netGetOpts) may not work with the options: WIP_NET_OPT_IP_TTL,
WIP_NET_OPT_IP_TOS, and WIP_NET_OPT_IP_FRAG_TIMEO.
The event of the Internet library plugin (WIP_CEV_ERROR)
may not be triggered, if the activated PDP context of AirPrime has been
deactivated with AT+CGACT=0.
If a SMS is sent to
AirPrime which has been powered off, this incoming SMS may be never received
when AirPrime is powered on.
Virtual UART (CMUX DLC) may not respond, if an incoming
call is received when sleep mode has been enabled.
The state of RTS returned by ADL API (adl_portGetSignalState)
The second A&D
memory cell subscription of an undefined size could cause AirPrime to
The folders ("."
and "..") cannot be displayed, when the contents of a File System
is listed with the FS OBEX.
When the T3321 timeout occurs during a GPRS detach
procedure with the retransmission, AirPrime fails to perform the GPRS attach
AirPrime in CGCLASS A
may not be able to setup a PPP dial up network successfully with some special
When a MO call is made to a 'busy' number, the busy tone
doesn't stop even after ATH has been issued.
AirPrime may not be
able to receive +WIND: 15 unsolicited response for NITZ information, if it is
registered to a GSM-only cell at power up.
The start-up time of
AirPrime is altered, as the firmware architecture has been revised.
Stack overflow test does not trigger a reset & a
Timer expiration of application
tasks with different priorities may lead to failure of event handling.
SIM initialization time can be very long and may vary from
one SIM to other.
command on non-existing SIM file-ID may lead AirPrime return wrong response.
+CME ERROR: 13 is not reported after a SIM is removed
The Open AT Application Framework is a complete software package for embedded M2M application development. It offers a range of readily available building blocks which accelerate the application development process, allowing you to bring connected products to market faster and reduce development costs.
Open AT Firmware release notes includes :
Firmware 7.54.2.A1 (SL808xT/ BT)
Firmware 7.54.0.A1 (SL808xT/ BT)
Firmware 7.53.1.A1 (SL808xT/ BT)
Firmware 7.52.1.A5 (SL808xT)
Firmware 7.52.0.A1 (Q2698)
Open AT Frimware 7.52
Open AT Firmware 7.51
Open AT Firmware 7.50
Open AT Firmware 7.4a
Open AT Firmware 7.47.6_V2
Open AT Firmware 7.47.6