Firmware Release Notes

Pico

Pico v0.0.57-r57 · 11.9.2026

Bugs:

Fix pico station idle after pause transaction stays open
Fix false overload trip of the 130% overcurrent protection

Pico v0.0.55-r55 · 01.05.2026

Bugs

EM-406: Improve uart and watchdog
Quick Fix WiFi AP mode

Pico v0.0.54-r54 · 13.04.2026

Bugs:

Multiple improvements have been made to ensure better WLAN, mesh, and mobile connectivity.

Pico v0.0.53-r53 · 12.03.2026

Feature

Show "waiting for current" screen when the loadmanagement can not assign current to a station
Show Warning on Screen and cloud when CP is 0V
Show Error on screen when the Meter-SOM communication has failed
Change default min. current to 8A and disable car id per default
EM-348: RFID Card Installation Process Implementation
EM-319: Don't show the heat warning on the display. Only show it on the cloud
1 Phase Charging

Bugs:

EM-380: pico mesh nodes not joining the lm group
EM-396: Wrong Loadmanagement offline behavior
EM-379: Current balance not working on a group with single phase station
Meter-SOM SPI communication error (Should fix Meter-SOM communication after reboot)
Fix Bug in DNS resolution (WiFi)
Fix PLC (car id) waiting time
Fix charging statemachine timing
Set current to 0A before doing an unlock cable or reboot
Wait until the wifi Module is up and running before doing something (e.g. turn on the relais). This should avoid problems during the ESP32 Update.
Access Point Mode (installation) sometimes does not start
Reboot the wifi module after 5min of controller inactivity
Fix 1-byte UDP packet truncation in mesh-forwarded parallel Arm updates
Validate if required firmware files exist at startup
firmware update improvements
EM-368: Lexus stops charging after 30min
EM-367: Activate with RFID - Car goes into error state first
EM-366: Station stops charging when the wifi module restart due offline timeout
Fix integer overflow panic in display_module.rs time calculation
EM-362: Unable to connect to Installation AP
WiFi: decoupling Timer execution context

Pico v0.0.47-r47 and 0.0.46-r46 · 01.12.2025

Option to switch between 1-3 phases via Modbus or API. (MLM is not yet supported)
internal improvements

Pico v 0.0.37-r37 and 0.0.36-r36 · 14.08.2025

Bug fixes

Pico v0.0.34-r34 · 16.01.2025

Bug fixes

EM-336: Fix WLAN Installation Problem

Pico v0.0.33-r33 · 06.01.2025

Features

EM-281: Loadmanagement: Free the reserved current (6A) for paused stations
EM-172: Loadmanagement: The current when to change from 3-phase to 1-phase charging is now adjustable in the cloud
EM-172: Loadmanagement: Max. current (per station) for 1-phase charging
EM-329: Loadmangement: Increase from 1-phase to 3-phase charging is now possible. The setting to enable / disable it is in the cloud
Installation: WLAN in installation mode has now a Password ("smart-me"), for Picos >= 7005567 and (7003152 - 7005229)

Bugs

Mobile connection stability increased

Pico v0.0.30-r30 · 03.10.2024

EM-320 Fix possible loss of charging transactions in communication (mostly mobile)

Pico v0.0.29-r29 · 1.7.2024

Features

EM-245: Load management: Reset from 1-phase to 3-phase, even if cars in the group are being charged.

Bugs

EM-311: Adjust Temperature Limits
EM-307: Improved offline behavior

Pico v0.0.28-r28 · 15.04.2024

Features:

New Authorize Images Flow and Animation (RFID, CardId) (EM-264)
PLC Timeout removed (changed from 25s to 3s)

Bugs

Improve Offline detection
WiFi improvements

Version 0.0.25-r25 · 10.01.2024

Features:

SIM7070 Support

Bugs

Improved Mobile Connection
Show "Failed" Screen when Authorize with RFID card was not successful
Loadmanagement: Calculated current unbalance index returning wrong value
Loadmanagement: Load manager doesn't increase station current for specific condition

Technical:

upgrade aes soft algorithm

Pico v0.0.23-r23 · 07.12.2023

Features:

Dynamic Current on Lost connection for Loadmanagement Group

Bugs

EVSE Tool fixes (try to restart it after a crash)

Pico v0.0.22-r22 · 04.09.2023

Bugs

Fix problem with locker with very cold temperatures (below -20 degree C)

Pico v0.0.21-r21 · 27.08.2023

Features

Stop charging when disable calibration mode (for transaction validation in production)
Increase routing lookup table for wifi module (support upto 200 stations per loadmanagement group instead of 20)

Pico v0.0.20-r20 · 03.07.2023

Show date/time (start time of the charging and the duration) in the charging screen
Show the current used and allowed in the power screen
Do RCD Test every 24h in State A
Use lower baudrate if WiFi Update fails

Pico v0.0.19-r19 · 08.05.2023

Fix Bug in Charging Statemachine (Wait in State B1 until we have a PWM before switch on the relais)

Pico v0.0.18-r18 · 03.04.2023

Buffer images (reduce reads from flash)
RSSI (signal quality) for wifi and mobile support
Flush to disk (flash) after writing the settings file or the images / firmware updates

Pico v0.0.17-r17 · 17.02.2023

Timing changes to power start up after car is ready (enhanced car type support)
Internal optimizations

Version 0.0.16-r16 · 16.12.2022

Internal optimizations

Version 0.0.15-r15 · 12.12.2022

Enhance Pico load shedding for single stations
Internal optimizations

Version 0.0.14-r14 · 06.12.2022

Show energy consumption at the end of charging

Version 0.0.13-r13 · 09.11.2022

Internal optimizations

Version 0.0.12-r12 · 06.12.2022

Internal optimizations

Version 0.0.11-r11 · 11.10.2022

Warnings and errors enhancement on cloud
Bugfix: Loadmanagement dynamic current

Version 0.0.10-r10 · 23.09.2022

Bugfix: CarID detection

Telstar 80A / Telstar CT

Version 9 (V18 and V19) · 19.09.2023 (beta test ran until 08.2024)

Bug fixes:

Fix Modbus TCP (only 255 connections problem)

Version 8 (V16 and V17) · 12.04.2023

Bug fixes:

Fix stop "start wifi" after disconnection from AP in special cases

Version 7 (V14 and V15) · 16.01.2023

Bug fixes:

Modbus TCP Timeout (idle clients will be disconnected after 5min)
Modbus TCP limit max number of clients to 4
Disable mesh connect when Modbus TCP is enabled
Connect to mesh network when connection to normal wifi AP fails for 16 times

Technical:

Internal Updates for ESP

Version 6 (V12 and V13) · 19.02.2022

Bug fixes:

Modbus TCP heap overflow (on start modbus)
Deadlock in DNS resolution with wifi without internet connection

Version 5 (V10 and V11) · 21.02.2022

Bug fixes:

Power Event action was factor 10 wrong

Version 4 (V8 and V9) · 11.02.2021

Bug fixes:

Fix Modbus TCP Bug

smart-me reserves the right to implement features and bug fixes that are not communicated, particularly where internal matters are concerned.