OBDLink MX+ [STN2256] ChangeLog
OBD Solutions LLC


v5.12.2 - 2025/10/30
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- BUG: Fixed an issue where CAN multi-frame message transmission would cause the device to lock up after 35 minutes of uptime



v5.12.1 - 2025/10/16
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- NEW: Added the Batched Commands feature, which supports sending multiple commands/requests in a single prompt
- NEW: Added the STBC command for enabling and disabling the Batched Commands feature
- NEW: Added the STBCOF command, which sets the output format for batched commands
- NEW: Added an optional parameter to STM and STMA commands to exit monitoring after reaching the specified message count
- NEW: Added the STITW command to set ISO protocol W timings
- NEW: Added the STBTI and STBTIX commands for retrieving modem details and current configuration status

- CHG: STCSTM now also sets ISO 11898 inter-frame delay for segmented messages

- BUG: Fixed handling of ATCRA, ATCF, and ATCM so their values are preserved when ATSP or ATTP are issued, matching ELM327 behavior
- BUG: Fixed rare issue where an overflow condition could reduce message delay times
- BUG: Fixed rare ISO 15765 flow-control frame transmission failure during concurrent multi-frame reception
- BUG: Fixed INTERNAL ERROR when receiving more multi-frame messages than specified
- BUG: Fixed ATCRA not restoring default filters when used without a parameter
- BUG: Fixed bug, STPX now properly sends 29-bit CAN messages when the AT/ST protocol is configured to 11-bit CAN



v5.10.3 - 2024/02/01
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- NEW: Added the STIP command to set message parity for ISO-14230 protocols
- NEW: Added the STIIAP command to set initialization address parity for ISO-14230 protocols

- CHG: Changed STIFI command to keep ISO-14230 connection open post-initialization

- BUG: Fixed command prompt printing when using STSLEEP without specifying a delay
- BUG: Fixed user input validation for STPPMA
- BUG: Fixed an INTERNAL ERROR when the periodic message protocol doesn't match the current protocol
- BUG: Fixed an issue with the Bluetooth LED turning on when it was disabled



v5.9.4 - 2023/05/25
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- BUG: Fixed bug that could occasionally cause the connection to fail
- BUG: Fixed bug that failed to enter legacy/manual pairing mode (set by STBTPM)



v5.9.2 - 2023/04/27
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- NEW: Pairing mode is enabled for 2 minutes if the user wakes the device by pushing the button
- NEW: Pairing mode is enabled for 2 minutes after a factory reset is complete
- NEW: iOS auto-connect is active right after power-up (does not wait for pairing mode to end)

- CHG: Changed button presses to enable pairing mode if connection is idle (no data in the last 3 seconds)
- CHG: Changed button presses to be ignored if connection is active in the last 3 seconds
- CHG: Reduced the time it took to start pairing mode after the button is pressed

- BUG: Fixed pairing mode enabled after connection dropped under certain conditions
- BUG: Fixed a bug where the device would erroneously wake itself from sleep
- BUG: Fixed bug where the modem would sometimes become unresponsive
- BUG: Fixed iOS auto-connect working with only 1 iOS device under certain conditions



v5.8.1 - 2023/03/29
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- BUG: Fixed a bug where STI/STDI/STDIX may return the wrong device ID or hardware revision
- BUG: Fixed ATCF not setting filter properly
- BUG: Fixed <DATA ERROR for multi-frame messages while in monitoring mode



v5.8.0 - 2022/11/16
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- NEW: Added STBTPM command to set Bluetooth Pairing Mode



v5.7.1 - 2022/09/20
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- BUG: Fixed factory reset issue



v5.7.0 - 2022/09/16
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- NEW: Added support for PP 1D
- NEW: Added support for PP 1C
- NEW: Added support for PP 14

- CHG: PP 0C sets UART baud rate to 9600 when value is 00
- CHG: ATCRA now accepts "X" as a don't care
- CHG: Relaxed ISO initialization timing to work better with non-compliant ECUs
- CHG: Changed STIP4 to saturate at 262 ms
- CHG: Removed 13V sleep inhibitor

- BUG: Fixed CAN baud rate divisors for Programmable Parameter 2D and 2F
- BUG: Fixed bug with user entering invalid SW-CAN mode selection with STCSWM



v5.6.24 - 2022/03/22
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- Initial release
