Sony DVP-FX820 Multi-Region/Zone hack/unlock

all-region hack for Sony SR210P all-region hack for Sony SR210P

I tried resolving through http://www.ecoustics.com/electronics/for...
which first reads:
With the DVD player turned off(stand by), press:
TOP MENU
CLEAR
POWER

Choose option 2 and after option 4. Type:
12450 [press enter]
00000 - Then press enter and power off.
and also tried here on fixya: http://www.fixya.com/support/t4332463-dv... (which is the same but suggests a code of 24570)

and also down the page on http://www.ecoustics.com/electronics/for...

I tried the suggestion of:
1.Switch on the player
2; Pop open the CD compartment
3. Enter the following code (using the remote): 2812
4. Highlight the region
5. Change to 9 (for Multi-region) using the 'Enter' button
6. Hit 'Clear' to exit
7. Pop in a DVD and enjoy!
What happens in this last one is that there is no "region" to highlight after step 3, which later in the ecoustics page suggests to skip step 4, and just substitute pressing 9 for step 5. Still nothing happens. I tried resolving through http://www.ecoustics.com/electronics/forum/home-video/608296.html which first reads: With the DVD player turned off(stand by), press: TOP MENU CLEAR POWER Choose option 2 and after option 4. Type: 12450 [press enter] 00000 - Then press enter and power off. and also tried here on fixya: http://www.fixya.com/support/t4332463-dvp_sr200p_s_limited (which is the same but suggests a code of 24570) and also down the page on http://www.ecoustics.com/electronics/forum/home-video/608296.html I tried the suggestion of: 1.Switch on the player 2; Pop open the CD compartment 3. Enter the following code (using the remote): 2812 4. Highlight the region 5. Change to 9 (for Multi-region) using the 'Enter' button 6. Hit 'Clear' to exit 7. Pop in a DVD and enjoy! What happens in this last one is that there is no "region" to highlight after step 3, which later in the ecoustics page suggests to skip step 4, and just substitute pressing 9 for step 5. Still nothing happens.