I'm trying to download this board version 2.7.4 and I'm getting errors
CRC doesn't match, file is corrupted. It may be a temporary problem, please retry later. java.lang.RuntimeException: java.lang.Exception: CRC doesn't match, file is corrupted. It may be a temporary problem, please retry later. at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:179) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: CRC doesn't match, file is corrupted. It may be a temporary problem, please retry later. at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:105) at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:60) at cc.arduino.contributions.packages.ContributionInstaller.install(ContributionInstaller.java:112) at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:172) ... 1 more
the links that i tried to put in preferences is here
https://github.com/esp8266/Arduino/releases/download/2.7.4/package_esp8266com_index.json
https://arduino.esp8266.com/stable/package_esp8266com_index.json
i also tried manually downloading the zip file in github and tried to put in appdata/arduino 15 yet i don't have the files for tools anyone can help me
the reason why i wanted to use 2.7.4 is I;m using library that is deprecated to the latest version of esp8266