ETZ21 Firmware


How to do firmware update?

  1. Prepare the Micro USB cable clip (gifted with the adapter) and a Windows/MAC computer
  2. Download the firmware below.
  3. Unzip the file if it is in zip format. When you see the file is in .bin format it’s already ready to use.
  4. Connect the adapter to your computer and a new drive will appear (like any portable drive). Do NOT need to remove the original file.
  5. In Windows computers, the original implanted firmware will show as a 0 KB file; in Mac computers, the original implanted firmware does not show.
  6. Copy and paste the firmware you unzipped into the drive.
  7. Eject the drive (VERY important step).
  8. Unplug the USB cable and the upgrade is completed.

Date Firmware version Details Link
21 June V2.1
  1. Fix the occasion camera freeze with F — bug.
16 June V2.0  

  1. Optimise the focusing performance of older NEX lenses on Nikon and realizing Pinpoint focusing.
  2.  Solve the problem of partial Tamron lenses’ focusing hesitation during video shooting with Z9, e.g. Tamron 70-180 F2.8 (A056) and Tamron 35-150 F2-F2.8 (A058).
  3. Correct the EXIF data errors
  4. Solve the problem of consumption of battery when the camera is off
  5. Improve focusing performance of certain lenses, e.g. Tamron 150-500 F5.6-7 (A57)
  6. No more focus point shifting when the camera wakes up from rest mode or restarts.
  7. Solve a few small bugs on the software side


30 May V1.2.0
  1. Enable autofocus ability with older Sony Nex lenses on ETZ21

Notice: Handling the Megadap ETZ21

1) No ‘Hot Switch’ of lenses.
Always switch OFF the camera before you remove the lens or the adapter
2) No touching on connecting pins/pads
Do NOT touch the connecting pad/pins with your bare hands. Static electricity produced may damage the electronic components in the adapter
3) Leave the adapter on camera
When you swap between different E-mount lenses, switch off the camera and leave the ETZ21 on the camera. Then unmount and mount another E-mount lens.
4)Don’t turn the lens+adapter frequently
Do not turn the lens+adapter back and forth frequently when camera is on or off.