Here’s the developer console output for another try.
It says that some devices are busy but I don’t think so… (just added the first failing device error message)
Thanks
Fritz
Elevating command: /Applications/balenaEtcher.app/Contents/Frameworks/balenaEtcher Helper (Renderer).app/Contents/MacOS/balenaEtcher Helper (Renderer) /Applications/balenaEtcher.app/Contents/Resources/app/generated/child-writer.js
gui.js:48798 Mon Aug 24 2020 18:40:57 GMT+0200 (Central European Summer Time) SafeWebview loaded ({"event":{"id":1,"url":"https://assets.balena.io/etcher-featured/index.html?borderRight=false&darkBackground=true&etcher-version=1.5.104&api-version=2&optOutAnalytics=false","method":"GET","timestamp":1598287257633.676,"resourceType":"mainFrame","ip":"104.31.83.157","fromCache":false,"statusLine":"HTTP/1.1 200","statusCode":200,"responseHeaders":{"access-control-allow-origin":["*"],"age":["134"],"cache-control":["max-age=600"],"cf-cache-status":["DYNAMIC"],"cf-ray":["5c7e84a00e202798-PRG"],"cf-request-id":["04c2f13803000027980ba26200000001"],"content-encoding":["br"],"content-type":["text/html; charset=utf-8"],"date":["Mon, 24 Aug 2020 16:40:57 GMT"],"expect-ct":["max-age=604800, report-uri=\"https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct\""],"expires":["Mon, 24 Aug 2020 06:09:58 GMT"],"last-modified":["Tue, 18 Aug 2020 09:51:57 GMT"],"server":["cloudflare"],"status":["200"],"vary":["Accept-Encoding"],"via":["1.1 varnish"],"x-cache":["HIT"],"x-cache-hits":["1"],"x-fastly-request-id":["573a7177ca3b908a895a7062d8e33d9b5a126ab8"],"x-github-request-id":["3F92:7C87:476543:59D925:5F43575D"],"x-proxy-cache":["MISS"],"x-served-by":["cache-vie21632-VIE"],"x-timer":["S1598287258.616034,VS0,VE1"]},"referrer":"","error":"net::OK"},"sample":0.1,"applicationSessionUuid":"6ca8d74d-09ef-4c49-bc92-c535ca496c11","flashingWorkflowUuid":"b681f889-5ad4-4768-b405-195fc9c84b92"})
gui.js:5626 0 devices, 0% at 0.00 MB/s (total 0.00 MB/s) with 0 failed devices
gui.js:48798 Successfully connected to IPC server: etcher-server-48488, socket root /var/folders/8q/l8_yfrqs03xc98sdypxlj0hc0000gn/T/
gui.js:48798 Image: /Users/fritz/Downloads/balena-cloud-prod01-raspberrypi3-2.51.1+rev1-v11.4.10.img
gui.js:48798 Devices: /dev/disk3, /dev/disk4, /dev/disk5, /dev/disk6, /dev/disk7, /dev/disk8, /dev/disk9
gui.js:48798 Umount on success: true
gui.js:48798 Validate on success: true
gui.js:48798 Auto blockmapping: true
gui.js:48798 Decompress first: true
gui.js:48798 Mon Aug 24 2020 18:41:01 GMT+0200 (Central European Summer Time) Flash error ({"image":"/Users/fritz/Downloads/balena-cloud-prod01-raspberrypi3-2.51.1+rev1-v11.4.10.img","drives":[{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk3","error":null,"isReadOnly":false,"displayName":"/dev/disk3","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk3","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/Untitled 2","label":"Untitled 2"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk4","error":null,"isReadOnly":false,"displayName":"/dev/disk4","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk4","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/resin-boot","label":"resin-boot"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk5","error":null,"isReadOnly":false,"displayName":"/dev/disk5","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk5","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/Untitled 3","label":"Untitled 3"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk6","error":null,"isReadOnly":false,"displayName":"/dev/disk6","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk6","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/Untitled 4","label":"Untitled 4"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk7","error":null,"isReadOnly":false,"displayName":"/dev/disk7","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk7","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/Untitled 7","label":"Untitled 7"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk8","error":null,"isReadOnly":false,"displayName":"/dev/disk8","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk8","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/Untitled 6","label":"Untitled 6"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null},{"size":7948206080,"isVirtual":false,"enumerator":"DiskArbitration","logicalBlockSize":512,"raw":"/dev/rdisk9","error":null,"isReadOnly":false,"displayName":"/dev/disk9","blockSize":512,"isSCSI":false,"isRemovable":true,"device":"/dev/disk9","busVersion":null,"isSystem":false,"busType":"USB","isCard":false,"isUSB":true,"devicePath":"IODeviceTree:/PCI0@0/XHC1@14","mountpoints":[{"path":"/Volumes/resin-boot 1","label":"resin-boot"}],"description":"Generic- SD/MMC/MS/MSPRO Media","isUAS":null}],"driveCount":7,"uuid":"20b9034d-b79a-41d1-b1c7-82698e6cde57","flashInstanceUuid":"20b9034d-b79a-41d1-b1c7-82698e6cde57","unmountOnSuccess":true,"validateWriteOnSuccess":true,"error":{"name":"Error","message":"EBUSY: resource busy or locked, open '/dev/rdisk4'","stack":"Error: EBUSY: resource busy or locked, open '/dev/rdisk4'","code":"EBUSY","syscall":"open","errno":-16},"sample":0.1,"applicationSessionUuid":"6ca8d74d-09ef-4c49-bc92-c535ca496c11","flashingWorkflowUuid":"b681f889-5ad4-4768-b405-195fc9c84b92"})