Idea NetSetter E1550 has some different dashboards also which are appended below:
2. UTPS16.001.06.01.356_MAC15.001.07.02.356_LNX15.001 .07.03.356
3. UTPS21.005.11.00.356_MAC21.005.11.00.356_LNX21.005 .11.01.356
These all modems can be unlocked via downgrader. But, problem is that many users have lost their IMEI no. because of bad / corrupt firmware and they are not able to use any network provider SIM.
Users who have lost their IMEI no. during the down gradation process can repair Idea NetSetter E1550 via firmware.
You can use any of the firmware which is listed below.
Note : Use at your own Risk. Password: NiRaV (Case Sensitive)
Download Link of E1550Update.11.609.20.02.356.zip
Download Link of E1550Update.11.609.20.03.356.zip