[Update 2 - 6/10/2021] After pulling the update from the servers, Nintendo has now republished Nintendo Switch System Update 12.0.3, and users will be able to download the new firmware once again. Issues with the microSDXC card update or error code 2123-1502 should now be resolved.

　　[Firmware 12.0.3]

　　Nintendo has republished the update and it is available to download once again.

　　If you were having problems with the microSDXC card update or error code 2123-1502, it *should* be working now. https://t.co/WJFKebyXQq

　　— OatmealDome (@OatmealDome) June 9, 2021

　　Update: It seems Nintendo may have quietly pulled the new Switch update from circulation, as some are reporting it actually exacerbates the 2123-1502 eShop access error. Hopefully, Nintendo gets things straightened out and issues a new version of the update soon.

　　Nintendo has quietly pulled Switch update 12.0.3 for unknown reasons

　　— SimonTime (@itssimontime) June 8, 2021

　　Original article: Nintendo Switch system update 12.0.3 has been rolled out by Nintendo and here’s what it does.

　　After last month’s minor 12.0.2 firmware update, we today got another minor system update for Nintendo’s hybrid platform. According to the official release notes, the new firmware only improves the system’s general stability, but according to Switch dataminer @Oatmealdome, the new system update also addresses error 2123-1502 when accessing the Nintendo eShop.

　　In addition to the above, the new 12.0.3 firmware update also packs new additions to the platform’s bad words list.

　　“The 12.0.3 update fixes error code 2123-1502 when accessing the eShop, according to Nintendo”, the dataminer writes. “Appears some have been getting this error lately.”

　　Down below you’ll find Nintendo’s official release notes for the new system update, albeit almost nonexistent once again.

　　Nintendo Switch System Update 12.0.3  Release Notes (Released June 7, 2021)

　　General system stability improvements to enhance the user's experience.The Nintendo Switch is available globally now. Nintendo launched the console back in March of 2017 with a Lite version of the hybrid platform releasing in 2019. Recent rumors suggest that a new Switch model, the New Nintendo Switch ‘Pro’ model, will be launched later this year. This new model is said to pack a Samsung OLED display alongside upgraded hardware and support for NVIDIA’s DLSS tech in order to upscale visuals to 4K resolution in docked mode.