最近翻出我的4s回味一下经典，从935降级到613并用p0sixspwn越狱，准备用“永远的4s”工具刷机到711（我有706和711爱思助手的备份，并且以前也成功刷机到这两个版本过）我分别尝试了用自己以前修改过的和用此工具修改的plist以及shsh文件进行检验，均提示：
loading: Restore.plist (2106)
ERROR: APTicket failed crypto
ERROR: Blob for LLB is invalid (crypto)
precious.plist is BROKEN
尝试几次都是如此之后，我强行进行自制固件刷机，用软件进入ufd后进行第四步，报错信息如下：
Reading data from version.xml
NOTE: using cached version data
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
Setting to interface 0:0
WARNING: set interface failed, error -8
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
Setting to interface 0:0
WARNING: set interface failed, error -8
Found device in DFU mode
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
Setting to interface 0:0
WARNING: set interface failed, error -8
Identified device as iPhone4,1
Extracting BuildManifest from IPSW
Product Version: 7.1.1
Product Build: 11D201 Major: 11
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
Setting to interface 0:0
WARNING: set interface failed, error -8
Device supports Image4: false
Variant: Customer Erase Install (IPSW)
This restore will erase your device data.
Getting device's ECID for TSS request
Found ECID 2075140735786
Getting ApNonce in dfu mode... 54 ac 87 7e 99 6a 68 81 b7 5d 81 c1 5b 7d ab 8b 47 e9 2c 43
checking for local shsh
Using cached SHSH
Using cached filesystem from 'custom/058-00295-002.dmg'
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
found device with ECID 000001e32806c32a
Setting to interface 0:0
WARNING: set interface failed, error -8
DEBUG: tss_response_get_path_by_entry: No entry 'iBSS' in TSS response
NOTE: No path for component iBSS in TSS, will fetch from build_identity
Extracting iBSS.n94ap.RELEASE.dfu...
DEBUG: tss_response_get_data_by_key: No entry 'ApImg4Ticket' in TSS response
DEBUG: tss_response_get_blob_by_entry: No entry 'iBSS' in TSS response
NOTE: No SHSH blob found for component iBSS
Not personalizing component iBSS...
Writing data to iBSS
Sending iBSS (73920 bytes)...
irecv_copy_nonce_with_tag: WARNING: couldn't find tag SNON in string NONC:54AC877E996A6881B75D81C15B7DAB8B47E92C43
found device with ECID 000001e32806c32a
Setting to interface 0:0
WARNING: set interface failed, error -8
Nonce: 54 ac 87 7e 99 6a 68 81 b7 5d 81 c1 5b 7d ab 8b 47 e9 2c 43
DEBUG: tss_response_get_path_by_entry: No entry 'iBEC' in TSS response
NOTE: No path for component iBEC in TSS, will fetch from build_identity
Extracting iBEC.n94ap.RELEASE.dfu...
DEBUG: tss_response_get_data_by_key: No entry 'ApImg4Ticket' in TSS response
DEBUG: tss_response_get_blob_by_entry: No entry 'iBEC' in TSS response
NOTE: No SHSH blob found for component iBEC
Not personalizing component iBEC...
Writing data to iBEC
Sending iBEC (278720 bytes)...
Retrying connection...
一直尝试连接，最后显示：
ERROR: Unable to connect to device in recovery mode
ERROR: Unable to connect to recovery device
ERROR: Unable to place device into recovery mode from DFU mode
我尝试了几天没能解决，请问各位是否知道问题的解决办法。先谢谢大家～
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