Update: http://www.twitlonger.com/show/8ibn75 has confirmed that PS3 Firmware update version 3.55 blocked access to lv2 kernel "execute" access, however, if you can patch back in a method to lv1_write_htab_entry, you can re-enable this area.
Today Sony Network Operations Americas VP Eric Lempel has announced that PS3 Firmware update v3.55 has arrived and simply adds a security patch.
i.e. for 0x80000000007f0000's page:
pte0 = lv2_peek(0x800000000f003f80ULL);
res = lv1_write_htab_entry(0, 0x3f8, pte0, 0x7f0190);
or for complete r/w/x access:
#define HTAB_BASE 0x800000000f000000ULL
#define HTAB_LV2_START 0x01000000ULL
#define HTAB_LV2_END 0x01800000ULL
/* enable full r/w/x access */
uint64_t pte0, pte1;
/* process entire lv2 */
for (i = 0; i < 128; i++)
/* read the old value */
pte0 = lv2_peek(HTAB_BASE | (i << 7));
pte1 = lv2_peek(HTAB_BASE | (i << 7) + 8);
/* verify entry is lv2 */
if ((pte1 >= HTAB_LV2_START) && (pte1 < HTAB_LV2_END))
/* patch proper htab settings */
lv1_write_htab_entry(0, i << 3, pte0, (pte1 & 0xff0000) | 0x190);
Typo in previous post, i << 3 instead of i << 4
Download: PS3 Firmware Update v3.55 (US) / PS3 Firmware Update v3.55 (EU)
More details are posted below, and to quote: "A new PS3 system software update, v3.55, will be released soon. This is a minor update that adds a security patch."
As expected, the PS3 Firmware 3.55 update works with the E3 Card Reader so you are still able to put the PS3 in Factory/Service Mode, however, Sony has revoked lv2diag.self file_1 patching the ability to downgrade (via PSDowngrade or PSGrade) or JailBreak PlayStation 3 consoles on Firmware above version 3.50.
Currently it is possible for PS Downgrade / JailBreak users to exit the PS3 Factory/Service Mode and get back to a normal Retail PS3 console using the lv2diag.self file_2.
Finally, although not recommended for PS3 homebrew fans, PS3 Firmware 3.55 is a mandatory update for those seeking to use PSN.
While some have reported the various bypass methods are temporarily working, more promising solutions include PS3 hackers continuing work on decrypting PS3 Firmware 3.50 with version 3.55 next in their sights.
More PlayStation 3 News...