asi es, te dejo las instrucciones para que metas las llaves manualmente.
"1) Press menu
2) Select Parental C0ntrol
3) Scroll down to Second Pin
4) Press zero 4 times
4a) Select auto roll, and turn all of them off) Then return to Parental control and repeat steps 1-4 as necessary.
5) A new screen should pop up. Select Set defaults and wait 10 seconds
6) Select Niagra 2
7) Use right arrow key to scroll to 0101

Change 0101 to 7101 and press OK
9) Press the Right arrow key once. You will see 0901.
10) Press the right arrow key again. You will see C101
11) Change the C to a 0
12) Press the down key once and you will see 00
13) press down key and Enter the First set of Active Key codes in. Press numbers for numbers, and use the small second set of tiny arrows located in the upper right corner of the remote to enter letters ( el page up and page down para las letras ). When you enter a number the cursor automatically advances. When you enter a letter, you need to use the Right arrow to advance the cursor.
14) press Select twice and make sure the OK button on the bottom right of the TV screen flashes. Then wait 10 seconds.
15) Press the Up key twice ( until the field 00)
16) use the right arrow key to change the 00 to 01
17) Use the down arrow key, and input the scond set of key codes.
18) Press Select key twice, and make sure the OK on the TV screen flashes. What 10 seconds.
19) Press cancel keyagain and again until you are back to a regular TV screen. "
funciona al 100%