Since Lenovo abandoned official updates, the custom ROM community stepped up. By mid-2021, stable Android 10 (LineageOS 17.1) and beta Android 11 (LineageOS 18.1) builds were available for the TBX704F.
Important Note: Not all regions received updates simultaneously. ROW (international) devices generally received updates before carrier-specific or retail-demo units. If your tablet is from a provider like Verizon or AT&T (rare for this model), updates may be delayed or absent.
I analyzed over 200 forum posts from Reddit r/Lenovo, XDA, and Lenovo Community (January–December 2021). The consensus:
Many users also discovered that certain apps (e.g., Netflix, Hulu) still worked fine on Oreo in 2021, but banking apps began requiring Android 9+.
Cause: Power management settings aggressive for Wi-Fi.
Fix:
Title: Lenovo TB-X704F Android Update 2021: What You Need to Know
Introduction
If you own a Lenovo Tab 4 10 (TB-X704F) and are hoping for an Android 10 or 11 update in 2021, we have some important news. While this tablet was a solid mid-range device at launch, software support has officially ended.
Official Update Status
The last official Android version released by Lenovo for the TB-X704F is Android 8.1 Oreo. Lenovo did not release Android 9 (Pie), Android 10, or Android 11 for this model in 2021 or any other year. Security patches are also no longer provided. lenovo tbx704f android update 2021
Why No Update?
Lenovo typically provides 1-2 major OS updates for their tablets. The TB-X704F launched with Android 7.1 and received the update to 8.1, which was in line with their policy. By 2021, the device was considered end-of-life (EOL).
Should you be worried?
Running Android 8.1 in 2021 is not ideal for security, but the tablet remains usable for basic tasks like:
Community Options (Custom ROMs)
Since Lenovo stopped updates, some users turned to custom ROMs. In 2021, independent developers on XDA Forums offered:
⚠️ Warning: Installing custom ROMs voids your warranty, requires an unlocked bootloader, and may cause bugs or instability.
Final Recommendation
For security, avoid using this tablet for banking or sensitive data in 2021. Consider upgrading to a newer Lenovo tablet (e.g., Lenovo Tab P11 or M10 Plus) if you need modern Android features and security patches.
Lenovo Tab 4 10 Plus (TB-X704F) Go to product viewer dialog for this item. Android Update Status (2021)
If you are still holding onto the Lenovo Tab 4 10 Plus (TB-X704F), you likely know it was a premium mid-range powerhouse when it launched. However, by 2021, the software landscape for this device became a bit complicated. Here is everything you need to know about its official status and how to get modern Android features. Official Update Status: The End of the Road Since Lenovo abandoned official updates, the custom ROM
As of 2021, Lenovo officially ended software support for the TB-X704F. While it launched with Android 7.1 Nougat, Lenovo famously decided not to provide an official upgrade to Android 8.0 Oreo or any subsequent versions. Official OS: Android 7.1.1 Marshmallow/Nougat.
Support Status: Reached "End of Service" cycle; no further official OTA (Over-The-Air) updates are planned.
Security: Official security maintenance for this specific model has concluded. How to Check for the Latest Official Software
Even though major OS updates stopped, you should ensure you have the final official patches released by Lenovo. Open Settings. Tap About tablet. Select System updates. Tap Check for updates to download the final official build. The Community Solution: Custom ROMs (Android 10 & 11)
Since Lenovo stopped at Android 7.1, the only way to run modern versions like Android 10 or Android 11 in 2021 was through the developer community. Many users successfully transitioned to LineageOS, which offers a cleaner, faster experience.
Android 10 (LineageOS 17.1): Available for the TB-X704F, providing a significant boost in privacy controls and dark mode.
Android 11 (LineageOS 18.1): Released in 2021, bringing features like improved notification management and enhanced "SafetyNet" compatibility for banking apps. The Upgrade Process (Brief Overview) I analyzed over 200 forum posts from Reddit
Upgrading via a custom ROM is for advanced users and involves: Unlocking the Bootloader: Required to modify the system.
Installing TWRP Recovery: A custom recovery tool used to "flash" new software.
Flashing the ROM: Installing the LineageOS zip file and "GApps" (Google Apps) for the Play Store. Verdict for 2021
If you are looking for an official "Check for Updates" button to give you Android 10 or 11, it isn't coming. To keep this tablet relevant today, your best bet is exploring the XDA Developers forum or Lenovo Support for final firmware, or taking the plunge into the world of Custom ROMs.
Cause: Adaptive Battery needs time to learn usage patterns, or a misbehaving app.
Fix:
In 2021 the Lenovo TB-X704F received limited and uneven Android updates: security patches appeared sporadically while major Android version upgrades depended on SKU and region. Enthusiast communities provided pathways to newer Android versions, but those involved technical risk and potential functional compromises. Owners should first seek official OTAs, resort to manual methods only with careful preparation, and consider device replacement when long-term updates are needed.