B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 15000; Flight Crew Type 619
Other / Unknown
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Equipment / Tooling; Manuals
On two separate days of my previous trip I could not access [my EFB contents manager app] on my iPad. During my initial preflight planning I noticed [the EFB contents manager] updated over 150 items and assumed it worked. I had to divert on my last trip from landing in ZZZ and a windshear go around and on the way to ZZZ1 I tried to open the QRH for the diversion guide to no avail. Nothing in [my EFB contents manager] would open. Today I was again preflight planning for a flight to start another trip and [my EFB contents manager application] again updated everything. I tried to open something but again nothing opened. I spent the better part of 30 minutes of my preflight planning updating; installing; rebooting; hard rebooting; uninstalling [my EFB contents manager app] and installing yet again. For now it appears to be working. What a great idea to do away with our emergency paper checklists!
B737 Captain reported difficulties with his EFB contents manager application. He was unable to access required and necessary information during flight and spent excessive time booting; installing; uninstalling; and rebooting the EFB contents manager application.