How to burn ZT3L module firmware and fix the SN empty error?
Device cannot be found after burning the project firmware, do I need to purchase a new license?
How to use the authorization code to define pins and perform flashing operations?
Self-burning high-frequency FAQ collection
BT and ZT series module flashing tutorial
Can CH340 be used to flash firmware?
What to do if the ZTU firmware cannot enter production testing after flashing?
What causes no response from the board after flashing and flashing failure?
Can the flashing operation be retried after a failure?
How to resolve the issue of devices not appearing in the app after firmware flashing?
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