Why does my """"custom"""" IPSW for iPhone5,3 iOS 10.3.4 not work? Am I missing something?

[userse31]

As a test I removed "Setup.app".

I extracted the IPSW contents, used "dmg" to extract the system partition image, mounted it, repacked it into the "DMG" image format. Put it all back inside the fancy zip archive...

I don't see any "Other (Custom IPSW)" option, only the regular "Other (Tethered)" which says to not select a custom IPSW.

Well I don't have any options now do I?

And yeah it fails.

`[Log] Selected IPSW file: /home/qwerty/Documents/iphone_5c/iPhone_4.0_32bit_10.3.4_14G61_no_setup_Restore.ipsw
[Log] Getting version from IPSW
Archive: /home/qwerty/Documents/iphone_5c/iPhone_4.0_32bit_10.3.4_14G61_no_setup_Restore.ipsw
extracting: ./Restore.plist
[Log] Getting SHA1 hash for /home/qwerty/Documents/iphone_5c/iPhone_4.0_32bit_10.3.4_14G61_no_setup_Restore.ipsw...
[Log] Getting SHA1 hash from AppleDB...
[Log] AppleDB request: https://api.appledb.dev/ios/iOS;14G61.json

11/30 11:43:55 [NOTICE] Downloading 1 item(s)

11/30 11:43:55 [NOTICE] Download complete: /home/qwerty/Documents/compiling/Legacy-iOS-Kit/tmp7311/tmp.json
[Log] Using saved SHA1 hash for this IPSW: 2f88a216491667ce33e768ab54752d9d0f53dc20
[Log] SHA1sum mismatch. Expected 2f88a216491667ce33e768ab54752d9d0f53dc20, got 05b6c14388b3cbecd9b95949280858973772925a
[WARNING] Verifying IPSW failed. Your IPSW may be corrupted or incomplete. Make sure to download and select the correct IPSW.
[Input] Press Enter/Return to continue (or press Ctrl+C to cancel)
`

Continuing anyway, it tries to download a nonexistant files.

`[Log] Found existing saved 10.3.4 blobs: ../saved/shsh/1386906580299_iPhone5,3_n48ap_10.3.4-14G61_3a88b7c3802f2f0510abc432104a15ebd8bd7154.shsh2
[Log] No SRTG for A6(X) device in DFU mode! Already pwned iBSS mode?

• If your device is not in pwnDFU/kDFU mode, sending iBEC will fail.
  [Log] Checking firmware keys in ../saved/firmware/iPhone5,3/14G61
  [Log] Getting firmware keys for iPhone5,3-14G61: https://raw.githubusercontent.com/LukeZGD/Legacy-iOS-Kit-Keys/master/iPhone5,3/14G61/index.html

11/30 11:44:34 [NOTICE] Downloading 1 item(s)

11/30 11:44:34 [ERROR] CUID#7 - Download aborted. URI=https://raw.githubusercontent.com/LukeZGD/Legacy-iOS-Kit-Keys/master/iPhone5,3/14G61/index.html
Exception: [AbstractCommand.cc:351] errorCode=3 URI=https://raw.githubusercontent.com/LukeZGD/Legacy-iOS-Kit-Keys/master/iPhone5,3/14G61/index.html
-> [HttpSkipResponseCommand.cc:218] errorCode=3 Resource not found
[#15888e 0B/0B CN:0 DL:0B]
11/30 11:44:35 [NOTICE] Download GID#15888e14ed412907 not complete: /home/qwerty/Documents/compiling/Legacy-iOS-Kit/tmp7311/index.html

aria2 will resume download if the transfer is restarted.
If there are any errors, then see the log file. See '-l' option in help/man page for details.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 14 100 14 0 0 88 0 --:--:-- --:--:-- --:--:-- 89
[Log] Getting firmware keys for iPhone5,3-14G61: http://127.0.0.1:8888/firmware/iPhone5,3/14G61

11/30 11:44:35 [NOTICE] Downloading 1 item(s)

11/30 11:44:35 [ERROR] CUID#7 - Download aborted. URI=http://127.0.0.1:8888/firmware/iPhone5,3/14G61
Exception: [AbstractCommand.cc:856] errorCode=1 Failed to establish connection, cause: Connection refused

11/30 11:44:35 [NOTICE] Download GID#19bac029f42b2103 not complete: /home/qwerty/Documents/compiling/Legacy-iOS-Kit/tmp7311/index.html

aria2 will resume download if the transfer is restarted.
If there are any errors, then see the log file. See '-l' option in help/man page for details.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (7) Failed to connect to 127.0.0.1 port 8888 after 0 ms: Could not connect to server
cat: index.html: No such file or directory
[Log] Getting firmware keys for iPhone5,3-14G61: https://api.m1sta.xyz/wikiproxy/iPhone5,3/14G61

11/30 11:44:35 [NOTICE] Downloading 1 item(s)
[#1d50bc 0B/0B CN:1 DL:0B]
11/30 11:44:55 [ERROR] CUID#7 - Download aborted. URI=https://api.m1sta.xyz/wikiproxy/iPhone5,3/14G61
Exception: [AbstractCommand.cc:351] errorCode=22 URI=https://api.m1sta.xyz/wikiproxy/iPhone5,3/14G61
-> [HttpSkipResponseCommand.cc:239] errorCode=22 The response status is not successful. status=522

11/30 11:44:55 [NOTICE] Download GID#1d50bcceb5446e23 not complete: /home/qwerty/Documents/compiling/Legacy-iOS-Kit/tmp7311/index.html

aria2 will resume download if the transfer is restarted.
If there are any errors, then see the log file. See '-l' option in help/man page for details.
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- 0:00:19 --:--:-- 0
cat: index.html: No such file or directory
[Error] Failed to download firmware keys.

• You may need to run wikiproxy to get firmware keys.

• For more details, go to the "Troubleshooting" wiki page in GitHub.

• Troubleshooting link: https://github.com/LukeZGD/Legacy-iOS-Kit/wiki/Troubleshooting#running-wikiproxy

• Save the terminal output now if needed. (macOS: Cmd+S, Linux: Ctrl+Shift+S)

• Legacy iOS Kit v25.11.09 (677319e)

• Platform: linux (Debian GNU/Linux 13 (trixie) - x86_64) `

Why is it checking for keys? This is an tethered flashing job!