I sometimes get an error the first time, but if i immediately try once more it works the 2nd time…
Also, in order to get around some of these issues, I updated to the latest pre-release firmware which had some changes to the AT command list, and then edited the file the OP mentioned: /www/src/temple/attools/index.js
I updated the line containing the setBandList and simply added the 66 and 71 band… the javascript has logic to calculate the correct hex.
setBandList: [‘Band1’, ‘Band2’, ‘Band3’, ‘Band4’, ‘Band5’, ‘Band6’, ‘Band7’, ‘Band8’, ‘Band9’, ‘Band10’, ‘Band11’, ‘Ba
nd12’, ‘Band13’, ‘Band14’, ‘Band15’, ‘Band16’, ‘Band17’, ‘Band18’, ‘Band19’, ‘Band20’, ‘Band21’, ‘Band22’, ‘Band23’, ‘Band24’, 'Band25
‘, ‘Band26’, ‘Band27’, ‘Band28’, ‘Band29’, ‘Band30’, ‘Band31’, ‘Band32’, ‘Band33’, ‘Band34’, ‘Band35’, ‘Band36’, ‘Band37’, ‘Band38’, ’
Band39’, ‘Band40’, ‘Band41’, ‘Band42’, ‘Band43’,‘Band66’,‘Band71’, ],