[Delta-9]

I'm in the process of very slowly (128kbps upload) repopulating SlateDroid's downloads for the Cruz Reader and wanted to address an issue before it comes up: No, I do NOT have any overclocked ROMs and I do NOT recommend their use in the Cruz Reader. I bricked a unit with one and after some research, immediately deleted them all. Here's why:

1. According to Samsung, the S3C6410 CPU could only be stabilized at 667MHz by increasing the current to the core by 0.1 volt. Given this fact, our CPUs had probably failed a stability test at the factory and were therefore rated as 533MHz parts. Also remember that the S3C6410 is really a SoC not merely a CPU.

2. The goal was unrealistic. Since the S3C6410 required a voltage boost to get to 667MHz, this was probably the maximum speed for that core. The 800MHz part in the WPDN (the source of the overclocking kernel) is probably a subsequent core with a reduction in the die size.

3. Any experienced overclocker (I started in 1989) should tell you that overclocking a CPU (or system) from power up is a VERY BAD IDEA! You really should only attempt this if the hardware itself has some provision to fall back to a lower speed when the boot process fails.

4. After digesting most of the content here, I came to the conclusion that 90% of bricked units were from overclocked ROMs with the remaining 10% resulting from interrupted flashing (admittedly rough estimates).


Back2OEM.zip http://www.mediafire...0du859790mo0mbh http://www.uploading.to/r8zfpnlusbte

CleanSweep.zip http://www.mediafire...96avontdjd1igub http://www.uploading.to/y3z0tpipbryc

Link2SD_1.7.0.apk http://www.mediafire...1w7j2k13x4y65ap

JGM's v3.1 PD_INX7E_ENG_6410POP.zip http://www.mediafire...4rbj0r6o6hzw9db http://www.uploading.to/76c5eszpn4ew

JGM's v4.0 PD_INX7E_ENG_6410POP.zip http://www.mediafire...5ydtnigpe0mjapt

JGM's Vanilla v1.0 PD_INX7E_ENG_6410POP.zip http://www.mediafire...3w1w3a820ctcotw

JGM's Vanilla v1.1 PD_INX7E_ENG_6410POP.zip http://www.mediafire...4590cpfg2732g57

Windows ADB.zip http://www.uploading.to/p7fmodm7a72v


Links verified on 05/04/2012

This post has been edited by Delta-9: 04 May 2012 - 04:18 PM

[Jesse0921]

I have to agree with you about the overclock and bricked units. This unit is meant for 533mhz period.

[Delta-9]

Thanks. I think I overstated my case a bit, but I spent 2 weeks flogging myself for attempting it, when I should have known better. In my defense, mobile CPUs had seduced me into believing that such a thing was easily attainable.

I did search for a bootloader that would go to 667MHz only for awhile, but ultimately decided that the modest performance boost wouldn't be worth the risk.

[macdanny]

I would be interested in the 667MHz version if you don't mind. If you don't want to post it, please private message me with it. Thanks in advance.

Delta-9, on 23 February 2012 - 12:26 PM, said:

Thanks. I think I overstated my case a bit, but I spent 2 weeks flogging myself for attempting it, when I should have known better. In my defense, mobile CPUs had seduced me into believing that such a thing was easily attainable.

I did search for a bootloader that would go to 667MHz only for awhile, but ultimately decided that the modest performance boost wouldn't be worth the risk.

[Delta-9]

Sorry, but never found one. I did run across a couple of candidate devices (s3c6410-based @ 667MHz) but never found a downloadable ROM to go any further. Ultimately, I refocused my efforts on optimizing Andy for this platform.

[Delta-9]

Direct links added to 1st post.

[mrsburnout]

Delta-9, on 04 May 2012 - 04:26 PM, said:

Direct links added to 1st post.

Moving and pinning this topic to VM Cruz Reader Firmware / Development

@Delta-9

Thank you for taking the (painfully slow) time to mirror these files. +1