1 00:00:14,230 --> 00:00:21,512 [HOST] Welcome to X1 Report, your source for the latest in blockchain news. Today, we're diving 2 00:00:21,512 --> 00:00:28,877 into the release of Tachyon v4.0.3, which is now ready for X1 mainnet. This update brings 3 00:00:28,877 --> 00:00:36,242 significant changes and upgrades from Agave v3.1.14 to Agave v4.0.3, closing the gap with 4 00:00:36,242 --> 00:00:37,566 upstream Solana. 5 00:00:37,566 --> 00:00:45,486 [ANALYST] The upgrade itself is relatively smooth, but it comes with a few important considerations 6 00:00:45,486 --> 00:00:53,229 for validators. Nicholas Pettas, a core developer at X1 Labs, announced this release on 7 00:00:53,229 --> 00:00:56,165 September 10, 2026, at 17:42 UTC. 8 00:00:56,165 --> 00:01:01,837 [HOST] One of the key features is that it's a rolling restart, meaning operators can upgrade 9 00:01:01,837 --> 00:01:07,776 their nodes independently without needing a coordinated network-wide stop. However, there 10 00:01:07,776 --> 00:01:10,446 are some critical steps to follow first. 11 00:01:10,446 --> 00:01:17,487 [ANALYST] Firstly, validators need to ensure their startup scripts are updated to remove deprecated 12 00:01:17,487 --> 00:01:24,450 flags. Three specific flags have been removed: --tpu-enable-udp, --tpu-disable-quic, and 13 00:01:24,450 --> 00:01:31,413 --use-udp. The --block-verification-method flag should be switched to unified-scheduler. 14 00:01:31,413 --> 00:01:38,243 [HOST] Another important change is the requirement for a wider port range. Validators need to set 15 00:01:38,243 --> 00:01:44,998 --dynamic-port-range 8000-8030 and ensure their firewall and cloud security groups permit 16 00:01:44,998 --> 00:01:45,833 this range. 17 00:01:45,833 --> 00:01:52,442 [ANALYST] There are also twelve feature gates that will activate at different epochs, bringing new 18 00:01:52,442 --> 00:01:59,201 functionalities to the network. For instance, the replace_spl_token_with_p_token gate will 19 00:01:59,201 --> 00:02:05,886 enable a one-shot core-BPF migration, while the upgrade_bpf_stake_program_to_v5 gate will 20 00:02:05,886 --> 00:02:09,190 raise the minimum stake delegation to 1 XNT. 21 00:02:09,190 --> 00:02:15,543 [HOST] But there's a catch: once a ledger has been written by v4.0, there is no clean downgrade 22 00:02:15,543 --> 00:02:21,751 path. This means that if you need to roll back to v3.1, you'll need to take a snapshot 23 00:02:21,751 --> 00:02:23,122 before the upgrade. 24 00:02:23,122 --> 00:02:29,623 [ANALYST] The release also introduces blockstore format changes, which are irreversible once the 25 00:02:29,623 --> 00:02:35,974 ledger has been written by v4.0. This is why it's crucial to have a rollback plan in 26 00:02:35,974 --> 00:02:36,427 place. 27 00:02:36,427 --> 00:02:42,235 [HOST] For operators running through a management console, it's recommended to wait for their 28 00:02:42,235 --> 00:02:48,313 tooling to catch up before switching branches. Additionally, note that the X1 Foundation's 29 00:02:48,313 --> 00:02:51,892 delegation criteria include a minimum client version. 30 00:02:51,892 --> 00:02:59,029 [ANALYST] In summary, Tachyon v4.0.3 is a significant upgrade that brings X1 closer to Solana while 31 00:02:59,029 --> 00:03:05,766 maintaining conservative practices. The rolling restart and mixed-cluster validation 32 00:03:05,766 --> 00:03:10,978 ensure a smooth transition, but careful preparation is essential. 33 00:03:10,978 --> 00:03:16,400 [HOST] If you're interested in learning more about the twelve feature gates or the detailed 34 00:03:16,400 --> 00:03:19,756 changes, check out the full release notes on GitHub. 35 00:03:19,756 --> 00:03:25,982 [ANALYST] This upgrade marks a critical step forward for X1, bringing it closer to Solana while 36 00:03:25,982 --> 00:03:32,428 introducing new functionalities and improvements. Stay tuned for further developments in 37 00:03:32,428 --> 00:03:33,966 the blockchain space. 38 00:03:33,966 --> 00:03:40,061 [HOST] That's all for today's report. Thank you for tuning in to X1 Report. Join us next time for 39 00:03:40,061 --> 00:03:43,719 more insights into the world of blockchain technology.