Lenovo Tbx704f Android Update 2021 -

Official updates for the Lenovo Tab4 10 Plus (TB-X704F) ended with Android 7.1.1. While there is no official "2021 update" from Lenovo, users often turned to custom software like LineageOS 18.1 to run Android 11 during that time. Check for Official Updates (Standard Method)

If your tablet is still running an older version, you can check for the final official Lenovo firmware via: Open Settings. Tap System (or About tablet on some versions). Select System updates. Tap Check for updates.

Note: If it says you are up to date on Android 7.1, no further official upgrades are available. Third-Party Android 11 Updates (LineageOS 18.1)

In 2021, the most popular way to modernize this specific tablet model was by installing LineageOS 18.1. This process is technical and involves several critical steps:

Bootloader Unlocking: Enabling "OEM unlocking" in developer options. lenovo tbx704f android update 2021

Custom Recovery: Installing TWRP (Team Win Recovery Project), with versions like twrp-3.6.1_9-0-X704F.img specifically for this model.

Flashing ROM & GApps: Using TWRP to wipe the device and install the LineageOS zip file along with Open GApps (typically ARM64, Android 11, Micro) to keep Google Play services. Optimization for Older Tablets

If you choose to stay on the official firmware but find the tablet slow, you can improve performance by:

Reducing Animation Scales: Go to Developer Options and set all "Animation scale" settings to 0.5x to make the UI feel snappier. Official updates for the Lenovo Tab4 10 Plus

Disabling Google Apps: Disabling heavy, pre-installed Google apps in favor of "Lite" versions or alternatives like NewPipe can free up system resources.

Based on the device model TB-X704F, this is the Lenovo Tab 4 10 Plus.

It is important to clarify the software situation for this device in 2021, as there is conflicting information often found on forums. Here is a detailed breakdown of the update situation, security patches, and custom ROM options for that year.

Most Popular 2021 Custom ROMs:

| ROM Name | Android Version | Stability (2021) | Key Features | |----------|----------------|-----------------|---------------| | LineageOS 17.1 | 10 (Q) | Stable | Dark mode, improved permissions | | crDroid 6.x | 10 (Q) | Stable | Enhanced customization | | LineageOS 18.1 | 11 (R) | Beta (unofficial) | Smart replies, one-time permissions | Official Update: Lenovo officially rolled out an update

1. Official Android Version Status

The Lenovo Tab 4 10 Plus (TB-X704F) launched with Android 7.1 (Nougat).

Official Update: Lenovo officially rolled out an update to Android 8.1 (Oreo) for this device.
The 2021 Situation: By 2021, Lenovo had stopped rolling out official major Android updates for this tablet. It did not receive an official Android 9, 10, or 11 update.
Android 9 "A/B" Slots: Many users reported receiving a notification for "Android 9" in 2020/2021. However, this was typically a confusion caused by the device's A/B partition system (seamless updates). The update was actually a security patch for Android 8.1, but the system restart switched partition slots, sometimes causing display glitches or requiring a second update immediately after.

3. Official update policy context (2021)

Lenovo traditionally provided limited major Android version upgrades for budget tablets; flagship phones receive more sustained support.
In 2021 OEMs often issued monthly or quarterly security patches for a limited period (commonly 1–2 years) and fewer major OS upgrades for mid-range tablets.
For TB-X704F, users commonly reported receiving security updates sporadically; major Android version upgrades (e.g., Android 10 → 11) depended on exact submodel, region, and SKU (Wi‑Fi vs LTE).

Issue #3: Wi-Fi Disconnecting

Cause: Power management settings aggressive for Wi-Fi.
Fix:

Settings → Network & Internet → Wi-Fi → Wi-Fi preferences → Keep Wi-Fi on during sleep → “Always.”
Also, disable “Turn off mobile data automatically” if present.

Summary for 2021

Did it get Android 11 in 2021? No (Officially).
What was the last official OS? Android 8.1 Oreo.
What was the last Security Patch? Around February/March 2021.
Solution for modern feel: Flashing a Custom ROM (like LineageOS 18.1) was the popular choice in 2021 to extend the tablet's life.

Here’s a step-by-step guide for updating the Lenovo TB-X704F (also known as the Lenovo Tab 4 10 or Tab 4 10 Plus, depending on the exact sub-model) to its 2021 Android update.

Important note before you start:
The TB-X704F is an older tablet (released 2017–2018). Its last major official Android update was Android 8.1 Oreo (some regions received security patches into 2020/2021). There is no official Android 9, 10, or 11 from Lenovo for this model.
If you’re looking for a “2021 update,” it would be a security patch or a minor bug-fix release, not a new Android version.

4. Reported official updates in 2021

Many TB-X704F units shipped with Android 9 or Android 10 depending on batch.
In 2021 some users reported receiving incremental OTA updates (security patches, bug fixes) but not all received Android 11 as an official OTA.
Release availability varied by region/carrier; Lenovo’s support pages and release notes for specific SKUs were the authoritative sources for OTA timing.

6. Risks and limitations

Firmware mismatch: Flashing the wrong image can permanently disable the device.
DRM and Widevine: Custom ROMs may lose Widevine L1, affecting HD streaming.
Warranty and support: Manual modifications generally void warranty and remove official support.
Fragmentation: Different SKUs and regional variants mean one user’s update experience may not generalize.

1. What Exactly is the Lenovo TBX704F?

Before diving into updates, it is crucial to clarify the hardware. The TBX704F is the Wi-Fi only variant of Lenovo’s mid-range Tab 4 10 series. It features:

10.1-inch HD display (1280 x 800)
Qualcomm Snapdragon 425 / 427 chipset
2GB or 3GB RAM (depending on sub-variant)
16GB or 32GB storage (expandable via microSD)
7000 mAh battery

The "X" in TBX704F indicates a consumer retail model (as opposed to carrier-specific variants). Throughout 2021, thousands of users on forums like XDA Developers and Lenovo Community asked the same question: "Will my TBX704F get Android 9, 10, or even 11 in 2021?"