Free Fire Advance Server Activation Code | OB51 complete Details

In 2026, Garena officially released their OB51 version for testing, which is only available for selected players. But you need an FF advanced server activation code to get access to their features. Most of the players are unaware of the advanced server Free Fire, which is how to get access via activation code. 
So, in this guide, ffadvanceserver provides the complete details on how to get this code. We will discuss it in detail. So, take a deep dive in.

Free Fire Advance Server OB51 Activation Code

Free Fire OB51 Advanced Server Activation Code list

We provide you with the list of activation codes to play Free Fire. If you want to get access via activation code. Here is the list that is mentioned below:

Activation CodeExpiry DateStatus
HJK6-MNB3-QWE7October 30, 2026✅ Active
XCV2-RTG5-YHN9October 30, 2026✅ Active
UJH7-GVF3-TGB2October 30, 2026✅ Active
FDS4-WSE6-OLK8October 30, 2026✅ Active
PKL3-NHU7-MNB2October 30, 2026✅ Active
XSW1-EDC3-RFV5October 30, 2026✅ Active
QAZ6-PLM2-BGT4October 30, 2026✅ Active
TGB7-YHN2-UJM9October 30, 2026✅ Active
IKJ3-OLP4-MNB7October 30, 2026✅ Active
PLM9-QAZ1-WSX3October 30, 2026✅ Active
HGT8-FDS2-VFR4October 30, 2026✅ Active
NJU3-TGB6-YHN1October 30, 2026✅ Active
OKM2-MNB8-PLK5October 30, 2026✅ Active
RFV9-TGB3-YHN4October 30, 2026✅ Active
WSX5-EDC9-IKL3October 30, 2026✅ Active
JUI6-KMN2-ZXC7October 30, 2026✅ Active
ZL94-QWE8-TY67October 30, 2026✅ Active
XM56-RTP9-JK42October 30, 2026✅ Active
BV28-LKJ5-UY73October 30, 2026✅ Active
HC83-ONZ4-FD26October 30, 2026✅ Active
MB19-QAZ2-XSW7October 30, 2026✅ Active
NP45-DFG8-WER1October 30, 2026✅ Active
FF4LQ15GD9O7October 30, 2026✅ Active
LOP0-HGT5-ZXQ6October 30, 2026✅ Active
TR43-MNB7-VFR9October 30, 2026✅ Active
QS90-VCX2-KIL1October 30, 2026✅ Active
JH34-WED2-OLP8October 30, 2026✅ Active
RF21-CVB8-KJU3October 30, 2026✅ Active
ZX91-QWE2-NMB5October 30, 2026✅ Active
UIO9-MNB7-TGB3October 30, 2026✅ Active
PLM6-KJU4-EDC8October 30, 2026✅ Active
CDE7-VFR6-HYT3October 30, 2026✅ Active
OKM9-IJU7-NHY6October 30, 2026✅ Active
RFV3-TGB5-LPO7October 30, 2026✅ Active
MLP0-OKM8-BGT2October 30, 2026✅ Active
WED5-RTY9-PLK3October 30, 2026✅ Active

What is Free Fire OB51 Advance Server?

The Adance server is a beta version of Free Fire that is only available for testing new features and updates before the release date. An activation code is essential to play the game. These codes are available only for selected players. 
They provide you exclusive features to test the New zombie PvE mode, improved ranked matchmaking, new sniper Riffle-VSS-X, Revamped Bermuda 3.0 map, character rebalancing, new skins and emotes.

What is Free Fire OB51 Activation Code?

Activation code of OB51 is in the form of an alphanumeric key which was sent to you by Grena Free Fire. You can use this code only once, unique for each player and required to play the game for testing new updates.

Get your FF Advanced Server Activation Code

Here is the step-by-step guide to register for the Free Fire OB51 Advanced Server. By following these steps, you can easily get your activation code for the free fire advanced server.

ffadvanceserverg

1. Registration

  • Visit the official Advanced Server website. 
  • CLICK ON OB51 FF Advanced Server and log in via your existing account
  • Fill out the registration form that includes your full name, a valid email address or an active phone number.
  • Submit your application and wait for the activation code that is sent to your Gmail account.
  • Open the Gmail account and verify your account, then you can enjoy the advanced server OB51.

For official updates and the latest announcements, you can also visit the Free Fire Advance Server website directly

2. Download the Activation Code for FF Advance Server

  • After registering for the Free Fire advanced serve,n download it from the same website.
  • Make sure that you download it from a trusted source and enable unknown sources on your device.

3. Install the APK

  • Now, find the APK file in your download folder. 
  • Click on the install button. 
  • It will be installed on your device.

4. Activation Code

  • The Activation Code was sent to your Gmail ID.
  • Go and open it.
  • Copy your code.
  • And paste it on the page where it is required.

How to get more Chances of FF Advance Server Activation Code

Sometimes, the activation code you have not received is due to some glitches or errors, or it was not selected under the free fire criteria. To get it quickly, follow these steps, which are mentioned below:

  • You should register early.
  • Stay active in the official Grenade Free Fire.
  • Reporting bugs inthe  previous server can increase your chances.
  • Ensure that your information is accurate.
  • Avoid logging in from your fake accounts.

Top 3 Methods to get Activation Code of FF Andvaced Server OB51

Here are the three ways to get code immediately that are mentioned below: 

Method 1: Visit the official website to check code validity

Method 2: Use your friend’s code to test the Advanced Server.

Method 3: Visit the YouTuber’s channel and content creator, because they have the code list forthe  giveaway.

Why is my FF OB51 Activation Code not working?

Here are some reasons why your activation code is not working in the free fire advanced server.

ProblemSolution
Already UsedTry for a new code.
Server Slots FullSlots complete, for next apply, wait for the new server
Incorrect Code EntryRe-check the code and again type it
Expired CodeUse active code
Wrong AccountMake sure you are using the same account. 
Why is my FF OB50 Activation Code not working

For players facing code issues, we regularly update a separate page with working Free Fire Redeem Codes. Don’t miss the chance to claim free rewards, skins, and other exclusive items

Conclusion

The Free Fire OB51 Advanced Server in 2026is the best way to explore the exclusive features and multiple changes to play before publishing officially. For playing, you must have an activation code ff the advanced server. So, just pick your valid code and enjoy the game by reporting bugs and winning up to 1000 diamonds.

Frequently Asked Questions

No, the code is compulsory to play the game, so type your code carefully. It will not open without entering a valid code.

Yes, but for 7-10 days it will be work. This periods is only for selected players to test the gameplay and much more.

Not necessarily; Garena may remove or change features based on feedback. Grena ccollectsfeedback and bug reports to make it better.

Yes, these are free from thegrenade-freee fire. This code is only valid for the time of login so you should be careful.

Yes, but use the same account to register. If you are using another account to log i,n it may cause your account to be banned.