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Hi, I bought used Xperia X. This phone is not licensed. I flashed with Sailfish_OS-Jolla-3.0.2.8-f5121-0.2.1.15, which I downloaded from my Jolla account.

I then upgraded to 3.0.3.9 and each time I boot into it, I get this "SDK mode in use".

I do not see this on the licensed X. Also package versions are one minor version newer then what I see on the licensed phone.

What is the meaning of this notification exactly? Is it possible that I have downloaded and flashed development version?

Hi, I bought used Xperia X. This phone is not licensed. I flashed with Sailfish_OS-Jolla-3.0.2.8-f5121-0.2.1.15, which I downloaded from my Jolla account.

I then upgraded to 3.0.3.9 and each time I boot into it, I get this "SDK mode in use".

I do not see this on the licensed X. Also package versions are one minor version newer then what I see on the licensed phone.

What is the meaning of this notification exactly? Is it possible that I have downloaded and flashed development version?

Hi, I bought used Xperia X. This phone is not licensed. I flashed with Sailfish_OS-Jolla-3.0.2.8-f5121-0.2.1.15, which I downloaded from my Jolla account.

I then upgraded to 3.0.3.9 and each time I boot into it, I get this "SDK mode in use".

I do not see this on the licensed X. Also package versions are one minor version newer then what I see on the licensed phone.

What is the meaning of this notification exactly? Is it possible that I have downloaded and flashed development version?

Hi, I bought used Xperia X. This phone is not licensed. I flashed with Sailfish_OS-Jolla-3.0.2.8-f5121-0.2.1.15, which I downloaded from my Jolla account.

I then upgraded to 3.0.3.9 and each time I boot into it, I get this "SDK mode in use".

I do not see this on the licensed X. Also package versions are one minor version newer then what I see on the licensed phone.

What is the meaning of this notification exactly? Is it possible that I have downloaded and flashed development version?

SUMMARY: As explained by spiiroin and in the discussion this is the same as "Development mode in use" when development mode is enabled and selected. This shows up if plugged to USB port since newer version of string translations.