Optimizer data issue after dongle update

[fredsch]

Hello,

Since updating the firmware on my SDongleA-05 dongle from V200R025C00SPC140 to V200R025C00SPC141, the metrics for my optimizers (SUN2000-600W-P) are no longer displayed correctly.

The data for the inverter, battery, and Smart Meter are all reporting normally.

In FusionSolar (both the Web portal and the App), the optimizers show as online, and their overall statistics are displayed correctly.

In the HA logs, I can see this message :

This error originated from a custom integration.
Logger: custom_components.huawei_solar.update_coordinator
Source: helpers/update_coordinator.py:512
Integration: Huawei Solar (documentation, issues)
First occurred: September 19, 2026 at 12:23:48 AM (76 occurrences)
Last logged: 4:24:51 PM

Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 6e61 for file 68 does not match expected value 7049. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 0556 for file 68 does not match expected value 932d. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data fromTA256045XXXX: Computed CRC d963 for file 68 does not match expected value 299f. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 254a for file 68 does not match expected value 31e1. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC ea64 for file 68 does not match expected value 459b. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.

**and in RAW :**

2026-09-21 14:40:46.170 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC d4b0 for file 68 does not match expected value f581. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 14:51:08.877 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 8d8f for file 68 does not match expected value 404d. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 15:27:39.873 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 6e61 for file 68 does not match expected value 7049. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 15:38:03.684 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 0556 for file 68 does not match expected value 932d. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 15:58:57.715 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC d963 for file 68 does not match expected value 299f. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 16:09:14.497 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC 254a for file 68 does not match expected value 31e1. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.
2026-09-21 16:24:51.164 ERROR (MainThread) [custom_components.huawei_solar.update_coordinator] Error fetching TA256045XXXX_optimizer_data_update_coordinator data: Could not decode optimizer data from TA256045XXXX: Computed CRC ea64 for file 68 does not match expected value 459b. This is typically a transient problem that will resolve itself when the device generates a new optimizer data file.

My config:

• SUN2000-10KTL-M1
• SDongleA-05
• SUN2000-600W-P
• LUNA2000-5KW-C0

[sahni2021]

I have the same problem.

Since updating the SDongleA firmware from V200R025C00SPC140 to V200R025C00SPC141, metrics for optimizers fail to decode in Home Assistant.

In FusionSolar (Web portal and Mobile App), optimizers appear online and report statistics normally. Inverter, Battery, and Smart Meter entities in Home Assistant continue reporting normally without error.

The optimizer update coordinator throws repeated file 68 CRC checksum mismatch errors during every polling cycle.