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⚠️ – all are reverse-engineered patches.

Now that your B311s-220 is unlocked, maximize its potential:

: You must access the motherboard to "short" the boot pins.

Avoid high roaming charges by using local SIMs while abroad. Higher Resale Value:

If you are looking for the latest software version to ensure stability, you can perform an online update directly through the router's interface:

Older firmwares (before 2020) allowed unsigned firmware upload via /html/upload.html . This was patched, but some carrier firmwares still have weak signature checks.