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=== option 2 ===
=== option 2 ===
1. Use the built-in patcher of progskeet to patch your image : [http://www.multiupload.com/GRPAM1598K downgrade v2 ProgSkeet.rar (19.62 MB)]
==== NOR offsets used ====
{|class="wikitable sortable"
|-
! target area !! patch no. !! NOR Offset !! Paste length !! Remarks
|-
| ROS0 || patch1 || 0x0C0010 || 0x6FFFE0 ||
|-
| ROS1 || patch2 || 0x7C0010 || 0x6FFFE0 ||
|-
| trvk_pkg0 || patch3 || 0x80000 || 0x20000 ||
|-
| trvk_pkg1 || patch4 || 0xA0000 || 0x20000 ||
|-
| trvk_prg0 || patch5 || 0x40000 || 0x20000 ||
|-
| trvk_prg1 || patch6 || 0x60000 || 0x20000 ||
|-
|}
2. After flashing, install the prepatched PUP (.e.g Rogero v2)
=== option 3 ===
# Dump flash and patch with downgrader (insert 3.55 CoreOS in ROS'), reflash
# Dump flash and patch with downgrader (insert 3.55 CoreOS in ROS'), reflash
# Put lv2diag.self and 3.7x PUP on USB stick (make sure no discs are in drive) to upgrade to 3.7x in service mode (normally a sin to do UPdate in service mode!)
# Put lv2diag.self and 3.7x PUP on USB stick (make sure no discs are in drive) to upgrade to 3.7x in service mode (normally a sin to do UPdate in service mode!)
# Once on 3.7x, redo the downgrade steps to get back to 3.55 and use the second lv2diag.self file to get out of service mode.
# Once on 3.7x, redo the downgrade steps to get back to 3.55 and use the second lv2diag.self file to get out of service mode.


=== option 4 ===
=== option 3 ===
note: Not tried+tested
note: Not tried+tested
# Dump flash and patch with downgrader (insert 3.55 CoreOS in ROS'), reflash
# Dump flash and patch with downgrader (insert 3.55 CoreOS in ROS'), reflash
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