Some issues in Evilnat 4.91.3 PEX BETA 2

[Windows10User2]

I have Evilnat 4.91.3 PEX BETA 2, IRISMAN 4.91.2 and FileZilla Client installed and I'm having the following issues:

1 - The PS3 beeps thrice and restarts when exiting IRISMAN after holding the PS button and clicking "Yes" after uploading files from the PC to the PS3 with FileZilla Client and an USB device connected to my PS3;

2 - The PS3 often freezes when returning to XMB from IRISMAN after pressing the Circle button and clicking "Yes" after uploading files from the PC to the PS3 with FileZilla Client and an USB device connected to my PS3, and when clicking the PS3's power button, the PS3 beeps thrice and turns off;

3 - Sometimes, the PS3 also beeps thrice and restarts after exiting a game or app using the PS button and clicking "Yes" with an USB device connected to my PS3;

4 - There are times when the PS3 beeps thrice and restarts in other occasions as well;

5 - Occasionally, when using FileZilla Client to upload PKG files from the PC to the PS3 while IRISMAN is running, the uploads start very slowly (like under 1 MiB/s) and take some time to reach the right speed (18/19 something MiB/s). I sometimes have to close and run FileZilla Client for it to reach it;

6 - If I leave FileZilla Client connected to the PS3 for some time, I can't reconnect to it until I close FileZilla Client and run it again. This also happens with the PS2, PSP, PS Vita and PS TV;

7 - After clicking "Check File system", it doesn't even reach 50% before the PS3 restarts to XMB;

8 - I can't decrypt ISOs in Evilnat. After uploading the encrypted ISOs and the matching key files (both have the same name) to "/dev_hdd0/PS3ISO" and clicking "Decrypt 3k3y/Redump ISOs (HDD)", a message appears saying "Could not find any encrypted ISO file". The same thing happens if clicking "Decrypt 3k3y/Redump ISOs (USB)" after copying the encrypted ISOs and the matching key files to the external HDD's NTFS partition's PS3ISO folder and I find it odd this setting mentions "/dev_hdd0/PS3ISO" when it has to do with USB, not with the PS3's HDD/eMMC/SSD/SSHD. I have the 80010017 error message when running the encrypted PS3 ISOs;

9 - My PS3 Slim's power button LED sometimes blinks green. I think it mostly happens if playing PS1 games (I guess it should happen with PS2 ones too).

EDIT: If I close FileZilla Client after uploading files from the PC to the PS3 or if I don't connect an USB device to the PS3 before uploading them (or if I take it after uploading them), I can exit IRISMAN after holding the PS button and clicking "Yes" without the PS3 beeping thrice and restarting and I can return to XMB from IRISMAN after pressing the Circle button and clicking "Yes" without the PS3 beeping thrice and turning off.

EDIT 2: I ran PS3DEC Simple GUI, chose the encrypted ISOs with the matching dkey files (I had to download the latter since said dkey files had the "key" extension, not the "dkey" one. I find it odd the "Decrypt 3k3y/Redump ISOs (HDD)" setting [as well as the "Decrypt 3k3y/Redump ISOs (USB)" one] mentions "key" files and not "dkey" ones and the existence of both "key" and "dkey" files. Anyway, if using both "Decrypt 3k3y/Redump ISOs (HDD)" and "Decrypt 3k3y/Redump ISOs (USB)" settings with dkey files instead of key ones, it still doesn't work since a message appears again saying "Could not find any encrypted ISO file"), created decrypted ISOs and after running them on the PS3, I was able to play the games without any error message.