BNB Chain has issued an urgent warning to node operators to complete a mandatory upgrade before the scheduled hard fork on April 28. The network requires operators to update to BSC version 1.7.2 by 2:30 a.m. UTC to avoid falling out of sync. This upgrade, which follows a successful testnet deployment, aims to enhance stability and transaction efficiency. The upcoming Osaka and Mendel upgrades introduce significant protocol changes, including a strict gas limit cap per transaction and various network efficiency improvements. These changes are designed to improve performance and reliability, with the deadline marking a critical compliance point for node operators to prevent disruptions.