Gledopto GL-C-008P_V11376801 firmware issues

[sosheskaz]

I downloaded and applied the new GL-C-008P_V11376801 firmware that was recently added. The result is that the light strip:

• No longer responds appropriately to color temperature settings. Color temperature configuration sets the relevant LEDs to off.
• Misapplies color settings—seems like it's missing the red component maybe.

Update: for the benefit of anyone finding this via search, here is how you can downgrade your firmware back to what it was before:

1. You'll need to publish a MQTT packet. For most installs, this can be achieved by opening Home Assistant, going to Integrations > MQTT, and clicking the ⚙️ icon next to the broker. Go to "Publish a Packet".
2. For topic, use zigbee2mqtt/bridge/request/device/ota_update/update/downgrade.
3. For payload, use {"id": "<NAME>"}. Name should be the name (including spaces) of your device in Z2M.
4. Open Z2M. You should see messages that the downgrade is in progress.

Source: https://www.zigbee2mqtt.io/guide/usage/ota_updates.html#downgrade-1

[malaakso]

See also this. Gledopto has too many models identifying as GL-C-008P so firmware updates are totally hit and miss.

[Koenkk]

I removed the firmware, could you try to downgrade your device?

[salvq]

I tried to downgrade via topic zigbee2mqtt/bridge/request/device/ota_update/update/downgrade and payload {"id": "0x5c0272fffe19ffd6"} and getting this error

[2025-08-06 20:48:36] z2m: Updating '0x5c0272fffe19ffd6' to previous firmware
[2025-08-06 20:48:36] zhc:ota: [0x5c0272fffe19ffd6 | GL-C-008P] No image currently available ([0x5c0272fffe19ffd6 | GL-C-008P] No image currently available)
[2025-08-06 20:48:36] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/0x5c0272fffe19ffd6', payload '{"brightness":254,"color":{"x":0.252,"y":0.093},"color_mode":"xy","color_temp":495,"effect":null,"identify":null,"linkquality":138,"power_on_behavior":null,"state":"ON","update":{"installed_version":22,"latest_version":7,"state":"available"}}'
[2025-08-06 20:48:36] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/response/device/ota_update/update', payload '{"data":{},"error":"Update of '0x5c0272fffe19ffd6' failed (No image currently available)","status":"error"}'
[2025-08-06 20:48:36] z2m: Update of '0x5c0272fffe19ffd6' failed (No image currently available)`

[Koenkk]

Can you try again?

[salvq]

Still the same, do I need to do some specific changes to z2m prior to downgrade ? I tried with publish and also via frontend, same result.

[2025-08-06 21:08:13] z2m: Updating '0x5c0272fffe19ffd6' to previous firmware [2025-08-06 21:08:14] zhc:ota: [0x5c0272fffe19ffd6 | GL-C-008P] No image currently available ([0x5c0272fffe19ffd6 | GL-C-008P] No image currently available) [2025-08-06 21:08:14] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/0x5c0272fffe19ffd6', payload '{"brightness":254,"color":{"x":0.252,"y":0.093},"color_mode":"xy","color_temp":495,"effect":null,"identify":null,"linkquality":138,"power_on_behavior":null,"state":"ON","update":{"installed_version":22,"latest_version":7,"state":"available"}}' [2025-08-06 21:08:14] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/response/device/ota_update/update', payload '{"data":{},"error":"Update of '0x5c0272fffe19ffd6' failed (No image currently available)","status":"error"}' [2025-08-06 21:08:14] z2m: Update of '0x5c0272fffe19ffd6' failed (No image currently available)

EDIT: z2m initiated the upgrade, I haven’t done anything except send a few more publish requests

[Crabang]

In my case its downgrading now, will give feedback as soon as the downgrade has finished.

Update:

Downgrade has finished. Now installed:
Firmware-Datum
20210303
Firmware ID
V_1_7_A1

In my case it was not sucessfully, the problem with the wrong colors and no cct light is still present.

[salvq]

Downgrade completed but wrong colors and no cct etc.

Firmware info:
OK colors - firmware before upgrade: 11076802 20211020
NOK colors - firmware after upgrade: 11376801 20230413
NOK colors - firmware after downgrade V_1_7_A1 20210303

[sosheskaz]

My downgrade also failed (posted while downgrading yesterday—haven't had time to look again until now).

Downgrading did not change the reported FW version the first time I tried, and did not fix my issue.

I removed and re-paired the device (Don't do this, it will remove your ability to downgrade), but to no avail. Then, restored a backup of Z2M (due to above) and tried downgrading again just now. Before downgrade (but after the reset):

{"swBuildId":"11376801","dateCode":"20230413","hwVersion":2}

After downgrade:

{"swBuildId":"V_1_7_A1","dateCode":"20210303","hwVersion":2}

Yet the behavior persists. My other, working gledopto, that I bought at the same time, reports

{"swBuildId":"11076802","dateCode":"20211020","hwVersion":2}

---

Based on the fact that my firmware was a higher version despite downgrading, and that downgrading today had no effect, is it possible that the OTA update isn't taking? I get the feeling if I reset the gledopto, it will show the new version again. Might end up requiring a lower level factory reset (physical? flash?), if possible. I'm not sure what that entails, but might look into it more later this week.

[docBliny]

My downgrade on two units doesn't seem to have fixed things. I only have white/CCT on both and they aren't turning on at all anymore.

I have several others with the same model number and those have varying firmware versions:

• 10751203 - 20220824 (slightly newer than the affected units)
• 20551203 - 20240513 (several years newer)

[0rsa]

I join the party, my GL-C-008Ps can no longer be controlled after the OTA upgrade.
I did successfully the downgrade but the issue persists. I can interview with success the devices, that's all. Turning on does not work, the ribbon remains off, reporting a "on" state though.
I flashed about 5 modules, it has worked for two of one batch, and failed (flash OK but control NOK) for the 3 others from 2 different batches, which was on 0.0.00-0.0.11 & 0.0.00-0.0.12 at first.

[malaakso]

Usually Gledopto's support (service@gledopto.com) provides correct OTA files when you explain the problem. You could directly ask for the version you had before the upgrade.

[0rsa]

@malaakso By any chance, is it possible to retrieve the correct version number to send to geledopto before updating or am I cooked?

Update: found this it in past logs

"update":{"installed_version":17,"latest_version":22,"state":"available"
"update":{"installed_version":20,"latest_version":22,"state":"available"}