=> Bootstrap dependency digest>=20010302: found digest-20190127 => Fetching arm-trusted-firmware-2.0.20190222-ab3d22473df279c61ed4d4873d26b072dcf887e8.zip => Total size: 4924422 bytes ftp: Error retrieving file `503 Backend unavailable, connection failed' fetch: Unable to fetch expected file arm-trusted-firmware-2.0.20190222-ab3d22473df279c61ed4d4873d26b072dcf887e8.zip => Checksum SHA1 OK for arm-trusted-firmware-2.0.20190222-ab3d22473df279c61ed4d4873d26b072dcf887e8.zip => Checksum RMD160 OK for arm-trusted-firmware-2.0.20190222-ab3d22473df279c61ed4d4873d26b072dcf887e8.zip => Checksum SHA512 OK for arm-trusted-firmware-2.0.20190222-ab3d22473df279c61ed4d4873d26b072dcf887e8.zip