Good to know that these low end touch phones getting their treatment. Okie Nokia 5230 and 5233′s firmware getting updated to v21.0.004 from v20.0.005 You can update the device to the new firmware via OTA (*#0000#) Check for updates or Nokia Software Updater on your PC. Better backup the data and stuffs from your phone though UDP(User Data Prevention) feature is on the Device.
Firmware Changelog(Nokia 5233):
- Forced Deletion of whole SMS
- Running Cursor during typing SMS
- Dictionary application can’t be activated by voice command
- Automatically close calendar without saving