Several months after its marketing, the PSP™ Slim with TA-088 v3 motherboard built-in are now able to be downgraded into 5.03 GEN-A (custom firmware).
In contrast to the M33, this custom firmware installed in the console requires each startup a small takedown via the menu to be activated.
Downgraded PSP™ Slim are thus available from now and, for those which would have already made the purchase on the console, the downgrade of your PSP™ Slim is also available.