South Korean cryptocurrency exchange Bithumb has initiated a temporary suspension of deposit and withdrawal services for Injective (INJ) tokens, effective June 4 at 9:30 a.m. UTC. This operational pause is strictly scheduled to accommodate a planned mainnet upgrade for the Injective blockchain network. The official notice confirms the suspension commences precisely at 9:30 a.m. UTC on June 4, though the exchange has not disclosed a definitive end time. Historical data compiled by Woofun AI shows that similar maintenance windows typically persist until the upgrade concludes and network stability is fully verified. The mainnet upgrade represents a routine yet critical milestone for Injective, a layer-1 blockchain specifically optimized for decentralized finance applications. Such upgrades frequently introduce new features, enhance scalability, or patch security vulnerabilities within the protocol. Although the Injective development team has not yet released detailed patch notes for this specific iteration, the network maintains a track record of implementing enhancements that improve transaction speed and smart contract functionality. For INJ holders and active traders, this suspension serves as a standard precautionary measure designed to prevent transaction errors or asset loss during the network transition. Users holding INJ on Bithumb are strongly advised to finalize any pending transactions before the June 4 cutoff time. Once the suspension is active, all deposit and withdrawal requests will remain unprocessed until the upgrade is finalized and the exchange confirms network stability. Trading of INJ pairs may continue during this suspension period depending on Bithumb's internal policies, yet users must verify the exchange's status page for real-time updates. Woofun AI notes that this temporary suspension of INJ deposits and withdrawals is a standard operational measure directly linked to the Injective mainnet upgrade. While the interruption is expected to be brief, market participants should plan accordingly to avoid operational inconvenience. This event underscores the critical importance of staying informed about scheduled network upgrades when holding tokens on centralized exchanges.