downgrade from ios 15.1 to 14.4 [TSSC] parsing beta firmware.json failed

[IbraimXCV]

Version: v2.0.0-test(66cdef43f10567b76b5ef95726d92641a5dfbd6f-301)
img4tool version: 0.197-aca6cf005c94caf135023263cbb5c61a0081804f-RELEASE
libipatcher version: 0.88-1e855d70c84419014e363bdbcaead7b145fe3e1f-RELEASE
Odysseus for 32-bit support: yes
Odysseus for 64-bit support: yes
Checking for updates...
Futurerestore is up to date!
[INFO] 64-bit device detected
daemonManager: suspending invasive macOS daemons...
daemonManager: findProc: found MobileDeviceUpdater!
daemonManager: killing MobileDeviceUpdater.
daemonManager: findProc: found AMPDeviceDiscoveryAgent!
daemonManager: killing AMPDeviceDiscoveryAgent.
daemonManager: done!
futurerestore init done
reading signing ticket /Users/mac/Downloads/241304734012035684_iPhone10,4_d201ap_14.4-18D52.shsh2 is done
User specified to use latest signed SEP
[TSSC] opening firmwares.json
[DOWN] downloading file https://api.ipsw.me/v2.1/firmwares.json/condensed
[TSSC] opening /tmp/firmwares_betas.jsoniPhone10,4.json
[DOWN] downloading file https://api.m1sta.xyz/betas/iPhone10,4
[TSSC] opening ota.json
[DOWN] downloading file https://api.ipsw.me/v2.1/ota.json/condensed
[Error] failed to download file from=https://api.ipsw.me/v2.1/ota.json/condensed to=/tmp/firmwares_ota.json CURLcode=28
futurerestore: failed with exception:
[exception]:
what=[TSSC] parsing beta firmware.json failed

code=103940164
line=1586
file=/Users/runner/work/futurerestore/futurerestore/src/futurerestore.cpp
commit count=301:
commit sha =66cdef43f10567b76b5ef95726d92641a5dfbd6f:
FutureRestore process ended.