Flow announced in X that the upgrade is nearly complete, 447 nodes are running Crescendo software, and block processing is normal. Flow says that as a final stage, we recommend that developers test and verify the success of their contract upgrade through their own access nodes. During this application testing phase, we asked the RPC operator to disable the connection to avoid interrupting the test. This means that end users cannot submit transactions until the test is complete. The next update will be available in three to four hours.