When Flashing you should always Initialize settings as the old settings sometimes do not get read.
This can be done from the LCD Menu using Initialize settings followed by Save Settings or
sending M codes to Controller
M502 // Load default configuration.
M501 // Restore all settings.
M500 // Save Settings
This can be done from the LCD Menu using Initialize settings followed by Save Settings or
sending M codes to Controller
M502 // Load default configuration.
M501 // Restore all settings.
M500 // Save Settings