Field downloading of wireless device software

A method for reconfiguring software in a wireless communications device (WCD), the method comprising:

• starting, using code in the WCD, a configuration change in executable software in the WCD, the executable software comprising a plurality of executable code sections, where each executable code section comprises at least one symbol library;
• accessing an unexecutable code section in the WCD and associated with the configuration change;
• reconfiguring the unexecutable code section to become a new executable code section in the executable software;
• and
• initializing the executable software incorporating the new executable code section.

A method for updating software in a wireless communications device (WCD), the method comprising:

• receiving, over an airlink connection, a new code section comprising a symbol library having at least one symbol;
• receiving, over an airlink connection, configuration code comprising instructions on how to incorporate the new code section into an existing plurality of code sections in the WCD, where each code section further comprises a symbol library having at least one symbol;
• executing the configuration code so that the new code section is incorporated into the existing plurality of code sections;
• starting execution of code in the plurality of code sections.