You are experiencing bugs with your steering wheel controls, Bluetooth pairing, or if your unit is frequently lagging.
: Most manufacturers do not provide public download links. You typically must request the specific .bin or .img file from the seller or a specialized community forum like XDA Developers or Xtrons Support . Installation : Copy the update file to a FAT32 formatted USB drive. Insert the drive into the head unit. Enter the Recovery or MCU Update menu in settings. T5.3.19 Update
The official release notes acknowledge three unresolved issues in T5.3.19: You are experiencing bugs with your steering wheel