How to reset simulator to use different iOS version as default

I’m setting a Jenkins project on a remote server. Even though in my capability setting, it’s using iPhone 5, iOS 8.1. But when the simulator launching, I still see iPhone 5s simulator popup… and then my test will failed at ‘Instruments crashed on startup’

    "ios81": {
        "browserName": "",
        "platformName": "iOS",
        "platformVersion": "8.1",
        "deviceName": "iPhone 5",
        "app": ""
    },

====> There is 1 workaround for me - manually set the iOS simulator to use Device -> iOS 8.1 -> 5… but this setting always override by other projects, so I have to keep reset it… is there any way to force set iOS simulator using different default phone? Many thanks!

CloudApp

Error log:
info: [debug] Killall iOS Simulator
info: Launching instruments
info: [debug] Attempting to run app on iPhone 5 (8.1 Simulator)
info: [debug] Spawning instruments with command: /Applications/Xcode.app/Contents/Developer/usr/bin/instruments -t /Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/PlugIns/AutomationInstrument.xrplugin/Contents/Resources/Automation.tracetemplate -D /tmp/appium-instruments/instrumentscli0.trace -w “iPhone 5 (8.1 Simulator)” /Usersaaaaaa.app -e UIASCRIPT “/Users/aaaa/Library/Application Support/appium/bootstrap/bootstrap-8e32800e7d9ad360.js” -e UIARESULTSPATH /tmp/appium-instruments
info: [debug] And extra without-delay env: {“DYLD_INSERT_LIBRARIES”:"/Users/aaaaaaa/node_modules/appium/node_modules/appium-instruments/thirdparty/iwd6/InstrumentsShim.dylib",“LIB_PATH”:"/Users/aaaaaa/node_modules/appium/node_modules/appium-instruments/thirdparty/iwd6"}
info: [debug] And launch timeouts (in ms): {“global”:90000}
info: [debug] [INST] Waiting for device to boot…
info: [debug] [INST STDERR] Instruments Usage Error : Timed out waiting for device to boot: “iPhone 5 (8.1 Simulator)”
info: [debug] [INSTSERVER] Instruments exited with code 255
info: [debug] Killall instruments
info: [debug] Instruments crashed on startup
info: [debug] Attempting to retry launching instruments, this is retry #2
info: [debug] Killall iOS Simulator
info: Launching instruments
info: [debug] Attempting to run app on iPhone 5 (8.1 Simulator)
info: [debug] Spawning instruments with command: /Applications/Xcode.app/Contents/Developer/usr/bin/instruments -t /Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/PlugIns/AutomationInstrument.xrplugin/Contents/Resources/Automation.tracetemplate -D /tmp/appium-instruments/instrumentscli0.trace -w “iPhone 5 (8.1 Simulator)” /Users/aaaaaaaaa.app -e UIASCRIPT “/Users/aaaaaa/appium/bootstrap/bootstrap-8e32800e7d9ad360.js” -e UIARESULTSPATH /tmp/appium-instruments