ERDAS ECW JP2/SDK v5.5 Update 2 Windows


Release Date: Friday, September 11, 2020

ERDAS ECW/JP2 SDK (Windows) Updatew 2 provides support for reading and writing ECW and JPEG2000 file formats in third-party applications. The product is licensed according to intended use – see Licensing in the ERDAS ECW JP2 SDK User Guide for more information. This installer contains all license types, including the free Desktop Read-only license.

Update 2 includes additional bug fixes and stability improvements.


  • Supported platform of the ECW/JP2 SDK

Install Instructions

Selected Highlights

  • Updated public GDAL driver to be compatible with 5.5 release and GDAL 3.1.
  • Shipped missing NCSIOStreamOptions.h header on Windows, OS X and iOS.
  • Updates to WASM decoder for RIA 2020.
  • Default block size for ECW v3 now 128x128.
  • NCSFileInfoReporter now reports block size.
  • Fixed local ECWP disk cache limit being ignored on non-Windows platforms.
  • Fixed issue with authentication and local ECWP disk cache.


Thank you for your interest. Please register to download this product.

I consent to receive electronic marketing communications on products, services, publications, and events.
Our Privacy Policy describes how we process Personal Data about you. It also provides information on how you may exercise any of your rights as a Data Subject. You have the right to withdraw your consent at any time by clicking on the "Unsubscribe" link within the electronic marketing communications sent to you. By submitting this form, you agree to our Terms of Use.