I just double-checked this running 1.42.2595 with an old 1.3U cable I had on a USDM Evo 8, which is very similar to the Evo 7 ECU. I was able to read just fine. Most likely you are having one of two problems:
1. The ECU has a non-standard init code in it (i.e. it is locked)
2. You don't have the init connector connected, or there is some problem there like a bad connection, or a malfunctioning circuit in your 1.3. If you have a voltmeter, you should be able to see this pin go from around 5V to >12V when it tries the init sequence. You need to keep the 1.3 plugged into the OBD socket while testing this - it needs the 12V.
Colby
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[11:12:02.744] EcuFlash Version 1.42.2595
[11:12:02.744] OS Version Windows Vista
[11:12:02.744] Qt Version 4.5.0
[11:12:02.754] 56 memory models read.
[11:12:02.754] scanning for metadata models in C:/openecu/rommetadata
[11:12:02.937] 455 ROM metadata models scanned.
[11:12:02.937] checksum module "subarudbw" loaded.
[11:12:02.937] checksum module "mitsucan" loaded.
[11:12:02.938] flashing tool "wrx02" loaded.
[11:12:02.938] flashing tool "wrx04" loaded.
[11:12:02.938] flashing tool "sti04" loaded.
[11:12:02.938] flashing tool "sti05" loaded.
[11:12:02.938] flashing tool "mitsukernel" loaded.
[11:12:02.938] flashing tool "mitsukernelocp" loaded.
[11:12:02.938] flashing tool "mitsubootloader" loaded.
[11:12:02.938] flashing tool "shbootmode" loaded.
[11:12:02.940] flashing tool "shaudmode" loaded.
[11:12:02.940] flashing tool "subarucan" loaded.
[11:12:02.940] flashing tool "mitsucan" loaded.
[11:12:10.312] Using interface OpenPort 1.3 Universal TX29VMKC29cb74d55517ba01031e19e62f4e11b679a6d6a7
[11:12:20.926] sending init sequence 1 (0001)
[11:12:21.956] got 0x05 response
[11:12:21.956] sending init sequence 2
[11:12:21.966] got 0x1B response
[11:12:21.966] sending init sequence 3
[11:12:22.338] entering bootloader
[11:12:22.339] sending kernel size (3560)
[11:12:22.359] sending kernel load address (0xFFFF8800)
[11:12:22.380] uploading kernel
[11:12:22.952] verifying kernel checksum response
[11:12:22.953] kernel valid
[11:12:23.154] kernel get version
[11:12:23.164] kernel version is : OpenECU Mitsubishi SH7052 Kernel V1.06