Display MoreTry to following this instruction below
1.Check update.ird file integrity before proceeding
(Download "Formuler_Sz7_Factory_Reset_Tool.zip" file from the right bottom of this page --->)
2.Copy update.ird to USB root (Use formatted USB with the NTFS file system)
3.Power off device
4.Insert USB into device
5.Power on device while repeatedly pressing the CH-UP button on the RCU. Press the CH-UP button repeatedly, don't hold it down.
6.Update progress bar appears on the screen. Stop pressing the CH-UP button
7.Wait for the progress bar to reach 100%. The device will reboot automatically when finished.
where do i get file "Formuler_Sz7_Factory_Reset_Tool.zip" ?