How to know exactly the year of the release of the Xiaomi TV: from the serial number to hidden menus

Why it’s important to know the year of Xiaomi TV

Did you buy a used Xiaomi Mi TV 4S or Redmi Smart TV X55, but the seller could not give the exact year of release? Or do you want to check if you sold a device with a warehouse under the guise of a new model? The year of production of the Xiaomi TV affects many factors, from the availability of firmware updates to compatibility with the new HDMI 2.1 or Dolby Vision standards. For example, models from 2019-2020 often lack support for ALLM (Auto Low Latency Mode), which is critical for gamers, while TVs from 2022-2023 get it through updates.

Moreover, knowing the year of release will help to avoid cheating when buying. Unscrupulous sellers sometimes give Xiaomi TV A Pro 2020 for the latest version of 2022, although the hardware and capabilities are fundamentally different devices. In this article, we will discuss 5 reliable ways to find out the year of release of any Xiaomi TV, from the budget Redmi TV to the flagship Mi QLED TV 75. All methods are tested on current models of 2026 and work even without an Internet connection.

Method 1: Decoding the serial number is the most accurate method

Serial number (S/N) Xiaomi's TV has encrypted production date information, which can be found on the box, in the settings menu, or on the sticker on the back of the device: XXXXXYYWWZZZZZ, where:

• 📅 YY — last two digits of the year, for example, 22 = 2022 year).
• 📆 WW — week of production (01 to 52).

Example: the serial number L3C2235A12345 stands for 22-2022, 35-35 weeks (end of August). That is, the TV rolled off the assembly line in August 2022. Attention: Xiaomi models for the European market (with the prefix EU in the name) year in the serial can be specified by ISO standard, where the week begins on Monday, which means that the TV number 2152 released in December 2021, not in January 2022.

Where to look for serial number:

• 📦 On a box - usually on a barcode sticker.
• 🖥️ On the menu: Settings → On TV. → Status.
• 🏷️ On the back of the TV - white or gray sticker with QR-code.

Method 2: Checking the sticker on the back panel

On the back of any Xiaomi TV (including the Redmi TV A55 and Mi TV Q2) there is a factory sticker with technical information.

• 📌 Date of Manufacture or MFRD DATE — date-mark.
• 🔢 Lot No. is a party number where the year is encrypted (e.g. 2305). = May 2023).

Models for China (e.g. Mi TV 6 OLED) often indicate the date in YYYY-MM-DD format. European versions (e.g. Xiaomi TV A 55) - in WW-YY format (week-year).

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If the sticker is missing, you should be wary, maybe the TV was in repair and the sticker was removed, ask the seller for a photo of the original box with the serial number.

Method 3: Checking through the TV menu (without disassembly)

If you don't have access to the box or sticker, you can find out the year of release directly from the PatchWall or Google TV interface (depending on the model).

Open Settings → About TV | Find Model or Model Number | Write down the full name (e.g. L55M6-6ARG) | Check the first letter after the dash - it stands for year (6 = 2020, 7 = 2021, 8 = 2022, etc.)

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Decoding of alphanumeric codes in the model name:

• 🔤 5 – 2019 (e.g. Mi) TV 4A 32 5AR).
• 🔤 6 to 2020 (e.g. Mi) TV 4S 55 6ARG).
• 🔤 9 – 2022–2023 (e.g. Redmi Smart) TV X50 9A).

Also, the About TV menu may display the Production Date (for models 2023+). If this item is not available, try entering the engineering code:

Press sequentially on the remote:


Menu → Up → Up → Down → Down → Down → Left → Right → Right → Right → Down → Down → Down → Down → Down → Down → Down → Left →




A hidden menu with detailed information will be opened.

Mi TV (series 4/5/Q)|Redmi Smart TV|Xiaomi TV A/A Pro| Another brand-->

Method 4: Definition of the MAC-address (for advanced)

MAC-The address of the network adapter of the Xiaomi TV also contains information about the date of production. MAC — This is the manufacturer's ID, and the last 6 can encode the date, MAC-address 78:11:DC:22:4A:35 deciphers:

• 📡 22 - 2022.
• 📡 4A — Week 4 (January-February).

How to find out MAC-address:

1. Go to Settings → Network → Wi-Fi.
2. Select your network and click on additional.
3. Scroll down to a point. MAC-address.

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MAC-Address is one of the most reliable ways to do this, because it can't be faked without flashing the TV, but models may not work until 2020 because of a different encoding format.

If MAC-address begins with B4:7C:9C, 78:11:DC or A4:85:6B — This is guaranteed to be the original Xiaomi, as these prefixes are reserved for the company.Fake TVs (e.g. Xiaomi branded clones from China) often have MAC from other manufacturers.

Method 5: Checking for firmware and updates

The firmware version (MIUI TV) indirectly indicates the year of release.

• 📱 Firmware 1.4.xxx — Models 2018-2019.
• 📱 2.0.xxx — 2020-2021.
• 📱 3.0.xxx and above - 2022-2026.

How to check firmware version: Settings → About TV → MIUI TV version.

If the TV hasn’t been updated from the factory, the firmware version will be the same year as the Mi TV Q1 75 with firmware 2.0.123, for example, released no later than 2021.

If the TV hasn’t received an update for more than a year, it could mean that:

• ⚠️ The model is outdated (for example, Mi). TV 3S 2017).
• ⚠️ Firmware modified (castom).
• ⚠️ The region of the TV has changed (for example, from Chinese to global).

⚠️ Warning: Some sellers reset Xiaomi TVs to factory settings before selling to hide the real year of release.Always check the production date in a number of ways (serial number) + sticker + firmware).

Frequent Mistakes and How to Avoid Them

Many users confuse the model year (e.g., Xiaomi Mi TV 4A 2018) with the year of production of a particular device. These are different things! The model could have produced 3-4 years in a row with minor changes. For example, the Redmi Smart TV X55 was produced from 2021 to 2023, and the hardware in the batches of 2021 and 2023 may differ (e.g., a different processor or matrix).

Typical errors:

• ❌ Trust only one source (e.g., only a serial number) Always double-check with data from menus or stickers.
• ❌ Ignoring regional anchorages: TVs for China (CN) Europe (EU) They can have different release dates even within the same model.
• ❌ Confusion with audits. TV 4S 55 6ARG (2020) and 6ARGR (2021) are externally identical, but the second has a better matrix.

If you buy a TV from hand, be sure to ask:

1. Photo of the box with the serial number.
2. Photo of the sticker on the back.
3. Screenshot from the TV menu.

⚠️ Note: Xiaomi’s grey TVs, imported from China without official localization, are often on the market, and their year of release may be specified according to the Chinese standard (for example, 2023.05.15 instead of 2320 (DVB-T2).

FAQ: Answers to Frequent Questions