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Firmware Release Notes

SolidFlex 2000 / PowerFlex 2000​

CMS​

Release DateVersionUpdate Summary
2026/4/10V140A.0A.00341. Added minute-level custom scheduling
2. Added support for third-party MQTT integration (not yet supported in App)
3. Added Modbus TCP cloud access (not yet supported in App)
4. Changed dynamic electricity pricing interval to 15 minutes
5. Optimized Wi-Fi and LoRa communication logic
6. Removed 10s long-press Wi-Fi reset function and moved it to App (not yet supported in App)
2026/3/3V1408.09.00311. Added support for Stromleser energy meter (optical reader)
2. Added support for HomeWizard P1 meter
3. Added support for Shelly Plug Gen1
4. Added meter offset configuration
5. Optimized communication logic
2026/1/15V1407.08.002F1. Optimized OpenData API logic
2026/1/15V1406.07.002E1. Optimized communication logic
2025/12/12V1406.07.002B1. Added support for Solarman smart plug, Shelly Plug S MTR Gen3, Shelly 3EM
2. Optimized system operation logic
2025/10/27V1401.05.00221. Optimized parallel operation and OpenData
2025/9/24V1400.04.001F1. Added support for Solarman P1 meter integration
2. Optimized OpenData control logic
3. Optimized version number format
2025/7/31V1.3.0A_R00D.032_M4801_000000191. Optimized 4G/Wi-Fi resource management
2. Improved linked device signal handling
3. Extended device compatibility: added support for SOLARMAN meters
4. Enhanced system stability
5. Optimized Bluetooth provisioning
2025/5/29V1.3.07_R00D.002_M4801_00000014/

Pfile​

Release DateVersionUpdate Summary
2026/1/14V0D.00.141. Optimized battery temperature status display
2026/1/9V0D.00.131. Optimized battery temperature status display
2025/12/25V0D.00.111. Added AC charging power setting
2025/11/14V0D.00.081. Optimized main unit LED strip control
2025/10/27V0D.00.061. Added register points for battery pack 6, AC-coupled energy, standby-to-sleep control, bypass enable, and grid/off-grid output energy
2. Modified PV4 alarm code reporting point
3. Removed duplicate LED control point
2025/9/24V0D.00.031. Added control flags
2. Optimized calculation logic

EMS​

Release DateVersionUpdate Summary
2026/2/11V1.01.031. Optimized forced charging logic
2. Optimized scheduling time slot configuration
3. Optimized low-temperature battery heating logic
4. Optimized parallel operation logic
5. Added support for PFA4000 battery pack
6. Fixed issue where deep standby could not be entered under certain conditions
2026/1/21V1.00.581. Optimized firmware upgrade timing
2. Optimized parallel power regulation
3. Added automatic charging when export is detected while AC charging is disabled
4. Added battery standby logic
2025/12/10V1.00.571. Optimized PV power allocation in parallel mode
2. Improved PV priority in real-time control mode
3. Optimized upgrade logic
4. Added exit from deep standby via short press
2025/11/28V1.00.551. Optimized upgrade logic
2025/11/4V1.00.501. Optimized deep standby logic (standby power: 20W with bypass ON, 8W with bypass OFF)
2. Optimized LED animation during shutdown
3. Optimized backup SOC logic
4. Optimized upgrade logic
5. Optimized PV logic
6. Optimized standby parameters in real-time control mode
7. Improved overall power consumption
8. Added support for fifth expansion battery pack (hardware supported, App not yet supported)
2025/10/14V1.00.481. Default EPS mode for off-grid port after power-on
2. Added critical load mode (not yet in App)
3. Added periodic full-charge calibration every 15 days
4. Grid power defined as AC line power
5. Added real-time control mode (not yet in App)
6. Optimized deep standby
7. Optimized parallel operation logic
8. Optimized standby power
2025/8/4V1.00.431. Added parallel operation, grid settings, and increased grid power limit to 3600W.
2. Added LED strip & bypass relay control; optimized LED animation.
3. Increased discharge to 0.6P; optimized SOC distribution; default AC charge 2400W; fixed micro-inverter control.
4. Lowered standby threshold to 2.8%; optimized recharge logic, MOS thermal control, and inter-pack power strategy.
5. Improved overload protection (longer delay to 30s, better margin, no cascade faults).
6. EMS upgrade allowed at SOC ≥ 5%; added shutdown logging & optimized storage performance.
7. Added shutdown reporting (reason/time/count); improved real-time & time control modes
2025/06/17V1.00.35/
2025/06/04V1.00.32/

BMS MB​

Release DateVersionUpdate Summary
2026/2/111.00.421. Optimized SOC algorithm
2026/1/211.00.381. Optimized SOC algorithm
2025/11/281.00.351. Optimized upgrade logic
2025/10/41.00.331. Optimized self-check logic
2. Optimized standby power
3. Added pre-charge logic
2025/7/311.00.301. Optimized charging detection, improved communication stability, enhanced discharge protection
2025/6/161.00.25/
2025/5/301.00.22/

BMS SLAVE​

Release DateVersionUpdate Summary
2026/2/111.10.421. Optimized SOC algorithm
2026/1/211.10.381. Optimized SOC algorithm
2025/11/281.10.351. Optimized upgrade logic
2025/10/41.10.331. Optimized self-check logic
2. Optimized standby power
3. Added pre-charge logic
2025/7/311.10.301. Optimized charging detection, improved communication stability, enhanced discharge protection
2025/6/161.10.25/
2025/5/301.10.22/

DCDC​

Release DateVersionUpdate Summary
2026/3/20V1.01.641. Fixed occasional communication loss of battery pack during deep standby in multi-pack systems
2026/3/4V1.01.621. Optimized battery pack communication
2026/2/11V1.01.611. Optimized battery pack communication
2026/1/21V1.01.591. Fixed SOC imbalance under low-power discharge
2025/11/28V1.01.541. Fixed PV limitation issues in some conditions
Optimized upgrade logic
2025/11/4V1.01.511. Optimized bypass logic
2025/10/14V1.01.481. Optimized PV charging logic
2. Optimized heating film control logic
2025/8/27V1.01.39/
2025/7/31V1.01.361. Added reverse current protection, optimized discharge power, fixed overcurrent charging issues, improved low-light detection, enhanced overload protection
2025/6/17V1.01.28/
2025/6/4V1.01.23/

INV​

Release DateVersionUpdate Summary
2026/4/10V1.361. Optimized inverter issue where it may not charge/discharge during grid-tied operation
2026/2/11V1.351. Optimized charging logic
2026/1/21V1.341. Fixed issue where bypass may disconnect under certain conditions
2025/12/10V1.321. Optimized real-time control mode
2025/11/4V1.301. Added support for fifth expansion battery pack (not yet supported in App, hardware fully functional)
2025/10/21V1.29/
2025/10/4V1.281. Optimized islanding protection logic
2. Optimized off-grid discharge logic
3. Optimized derating logic
2025/09/16V1.22/
2025/7/8V1.21Optimized charging; improved undervoltage protection; upgraded overcurrent protection; adapted to multiple regional regulations; enhanced off-grid control; improved weak grid performance; default compliance settings
2025/6/2V1.16/

BK1600​

CMS​

Release DateVersionUpdate Summary
2026/3/6V1408.0C.104A1. Added support for Stromleser meter (optical reader)
2. Added support for HomeWizard P1 meter
3. Added support for Shelly Plug Gen1
4. Added meter offset configuration
2026/1/19V1407.0B.10491. Optimized communication logic
2025/12/12V1406.0B.10471. Added support for Solarman smart plug, Shelly Plug S MTR Gen3, Shelly 3EM
2. Optimized system operation
2025/10/23V1401.0B.00421. Optimized OpenData
2. Optimized system operation
2025/7/22V130A.09.003A/
2025/6/24V1.3.09_R006.062_M4848_00000034/
2024/11/25V1.3_R006.002_M4848_00000021/

Pfile​

Release DateVersionUpdate Summary
2025/12/29V06.00.09Added bypass control switch
2025/11/14V06.00.08Added bypass control switch
2025/9/2V06.00.06/
2024/11/20V06.00.051. Updated battery data points
2. Optimized scheduling logic

EMS​

Release DateVersionUpdate Summary
2026/2/9V1.00.161. Added PV power sharing between units during parallel operation
2. Optimized real-time control logic
2025/8/28V1.00.141. System optimization: improved multi-device stability and power allocation
2. Feature enhancement: added critical load protection, scheduled full-charge maintenance, deep standby mode (replaces shutdown), extending battery lifespan
3. User experience improvement: more flexible wake-up conditions and smarter grid/off-grid operation
4. Logging & upgrade: added shutdown records; settings retained during upgrades
5. Protocol updated to latest internal communication version
2025/6/261.00.13/
2025/6/111.00.12/
2024/11/261.00.09/

BMS​

Release DateVersionUpdate Summary
2025/6/11V1.0.35Improved SOC accuracy during standby
2024/10/31V1.0.34/

MPPT​

Release DateVersion
2025/9/29V3.17
2025/6/11V3.16
2024/8/3V3.14

INV​

Release DateVersionUpdate Summary
2025/5/8V1.20/
2025/5/6V1.19/
2024/8/14V1.181. Optimized DC/DC charging loop
2. Optimized data reporting filter

BK1600 Ultra​

CMS​

Release DateVersionUpdate Summary
2026/3/6V1408.0C.104A1. Added support for Stromleser meter (optical reader)
2. Added support for HomeWizard P1 meter
3. Added support for Shelly Plug Gen1
4. Added meter offset configuration
2026/1/19V1407.0B.10491. Optimized communication logic
2025/12/12V1406.0B.10471. Added support for Solarman smart plug, Shelly Plug S MTR Gen3, Shelly 3EM
2. Optimized system operation
2025/10/23V1401.0B.00421. Optimized OpenData
2. Optimized system operation
2025/7/22V130A.09.003A/
2025/6/24V1.3.09_R006.062_M4848_00000034/
2024/11/25V1.3_R006.002_M4848_00000021/

Pfile​

Release DateVersionUpdate Summary
2025/12/29V06.00.09Added bypass control switch
2025/11/14V06.00.08Added bypass control switch
2025/9/2V06.00.06/
2024/11/20V06.00.051. Updated battery data points
2. Optimized scheduling logic

EMS​

Release DateVersionUpdate Summary
2026/2/9V2.00.061. Added PV overflow sharing to another unit during parallel operation
2. Optimized real-time control logic
2025/11/27V2.00.041. Increased bypass port current limit to 10A
2025/09/29V2.00.031. Optimized parallel operation scenarios
2. Added support for slave unit entering deep standby in wired parallel mode
2025/09/12V2.00.021. SOC rounding adjusted (truncate decimals)
2. Meter refresh interval set to 3 seconds
3. Slave power allocated by limit values
4. Zero power set as discharge
5. Micro-inverter fault ignored
6. Added shutdown logging
7. Parameter upgrade compatibility improved
8. Added new status indicators (e.g., recharge)
9. Enhanced overload protection redundancy
10. Line power includes bypass
11. Critical load only responds to bypass
12. Standby changed to deep sleep
13. Optimized deep standby logic
14. Added scheduled full charge
15. Upgraded Modbus to V2.3
16. Fixed parallel discharge issue
2025/06/26V2.00.01/
2025/3/7V2.00.00/

BMS​

Release DateVersion
2025/3/7V1.00.35

MPPT​

Release DateVersion
2025/9/29V3.17
2025/3/7V3.16

INV​

Release DateVersion
2025/08/28V2.21
2025/6/26V2.17
2025/6/20V2.15
2025/3/7V2.07