哎,纠结了很多天终于找到了这个迅雷可下的地址:
http://www36.multiupload.com:81/files/BF97AF0A156DFFE538646942B5DE8C54E1AB68F2EFC44D88CA0911D3DE49EE1D366837200BC7BABAF44004A7537CCEFD4DE0EEA6B35649945C6238C991437893379AA07B1D4B2FB6F9285DC1C13CFA19160A/iPad2,1_5.0_9A5220p_Restore.ipsw
http://www36.multiupload.com:81/files/BF97AF0A156DFFE538646942B5DE8C54E1AB68F2EFC44D88CA0911D3DE49EE1D366837200BC7BABAF44004A7537CCEFD4DE0EEA6B35649945C6238C991437893379AA07B1D4B2FB6F9285DC1C13CFA19160A/iPad2,1_5.0_9A5220p_Restore.ipsw