Flashapp and OTA Update fails

[gluap]

Github has changed their certificate change and because of that Firmwares up to and including 19.x cannot update via internet (also the flashapp can't be updated via internet).

Potential workarounds:

• Upload .bin file via web interface
• Update via usb and https://install.openbikesensor.org

Log from failed attempt using firmware 19.x

[461704][E][configServer.cpp:2055] extractParameters(): Extracting parameters
[461706][E][configServer.cpp:2069] extractParameters(): Http Parameter downloadUrl = https://github.com/openbikesensor/OpenBikeSensorFlash/releases/download/v0.1.22/flash.bin
[461716][E][configServer.cpp:2069] extractParameters(): Http Parameter version = Update to v0.1.22
[461724][E][configServer.cpp:2069] extractParameters(): Http Parameter upload = 
[461731][I][configServer.cpp:1678] handleFlashUpdateUrlAction(): Flash App Url is 'https://github.com/openbikesensor/OpenBikeSensorFlash/releases/download/v0.1.22/flash.bin'
[463782][E][ssl_client.cpp:37] _handle_error(): [start_ssl_client():278]: (-9984) X509 - Certificate verification failed, e.g. CRL, CA or signature check failed
[463785][E][WiFiClientSecure.cpp:135] connect(): start_ssl_client: -9984
[463796][W][HTTPClient.cpp:1469] returnError(): error(-1): connection refused
[463799][I][Firmware.cpp:71] downloadToFlash(): Opening https://github.com/openbikesensor/OpenBikeSensorFlash/releases/download/v0.1.22/flash.bin got -1.
[463812][I][Firmware.cpp:73] downloadToFlash(): http size: -1. 
[463818][I][Firmware.cpp:74] downloadToFlash(): Will access Stream:, free heap 128kb
[463825][E][Firmware.cpp:91] downloadToFlash(): Got http status: -1
[HTTPS:I] New connection. Socket FID=51
[HTTPS:I] Connection closed. Socket FID=50
[HTTPS:I] Request: GET /about (FID=51)
[464113][W][gps.cpp:356] sendAndWaitForAck(): Retry to send 0x2406 after 200ms.
[464314][W][gps.cpp:356] sendAndWaitForAck(): Retry to send 0x2406 after 200ms.
[464314][E][gps.cpp:361] sendAndWaitForAck(): Failed to send cfg. 0x2406 NAK: 0 after 401ms
[464518][W][gps.cpp:356] sendAndWaitForAck(): Retry to send 0x3406 after 200ms.
[464718][W][gps.cpp:356] sendAndWaitForAck(): Retry to send 0x3406 after 200ms.
[464718][E][gps.cpp:361] sendAndWaitForAck(): Failed to send cfg. 0x3406 NAK: 0 after 400ms
[HTTPS:I] Connection closed. Socket FID=51

[amandel]

#365 should fix this once and forever. There is also room for improvement within the error reporting.