Firmware Upgrade Error Deco X1500 (File is too large)

Error "The file is too large" shown when trying to upgrade Deco.
I cannot upgrade it neither manually because device list selection is broken, javascript has a bug trying to read "dial_type".
So I cannot select a device model, that is required to continue.
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Hi, welcome to the community.
As 1.0.5 is quite an older version, it is recommended to update to the 1.1.6 Build 20240911 version first manually, then 1.2.1/1.3.0:
https://www.tp-link.com/en/support/download/deco-x1500/#Firmware
PS, you should be able to find the IP address of the satellite Deco X1500/Deco X10 on the Deco APP. You can log into the individual web UI of a specific Deco X1500 to update its firmware first. Once all satellite Decos are updated, we can go back to the main Deco X1500/Deco X10.
(Deco X1500 and Deco X10 shared the same firmware download link.)
Wait for your reply.
Best regards.
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Hi, welcome to the community.
As 1.0.5 is quite an older version, it is recommended to update to the 1.1.6 Build 20240911 version first manually, then 1.2.1/1.3.0:
https://www.tp-link.com/en/support/download/deco-x1500/#Firmware
PS, you should be able to find the IP address of the satellite Deco X1500/Deco X10 on the Deco APP. You can log into the individual web UI of a specific Deco X1500 to update its firmware first. Once all satellite Decos are updated, we can go back to the main Deco X1500/Deco X10.
(Deco X1500 and Deco X10 shared the same firmware download link.)
Wait for your reply.
Best regards.
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Hi, would both "Online Upgrade" and "Local Upgrade" to 1.3.0 report "file too large"?
Can you manually update to the last 1.2.1 version via web UI?
Wait for your reply.
Best regards.
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@David-TP the only upgrade option I get is 1.3. And each time says file too big.
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@David-TP on your website the latest version available is 1.1.7
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Hi, thank you very much for the further update.
Could you please refer to this link to help me submit the Deco APP log:
I'll forward it to the senior engineer for further assistance.
Wait for your reply.
Best regards.
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@David-TP I got your mail. Made one last try this morning and it upgraded to 1.3.0, so all good, thanks for help.
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