About This File
This is factory (un-patched) main DSP firmware v.69.05 for Axpert Max 1 (with removable display) 7.2kW with the new processor ('28066) from Tommatech (re-brand of Axpert/Voltronic)
Changes from previous versions unknown.
The zip file contains SOP for upgrade using Tommatech/Arena tool.
Use at your own risk (if your original U1 is 69.00)