and that just leaves the modules folder

code/game/objects/items/devices/PDA/PDA.dm

@@ -19,7 +19,7 @@ GLOBAL_LIST_EMPTY(PDAs)
 	item_state = "electronic"
 	lefthand_file = 'icons/mob/inhands/misc/devices_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/misc/devices_righthand.dmi'
-	flags_1 = NOBLUDGEON_1
+	item_flags = NOBLUDGEON
 	w_class = WEIGHT_CLASS_TINY
 	slot_flags = ITEM_SLOT_ID | ITEM_SLOT_BELT
 	armor = list("melee" = 0, "bullet" = 0, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 100, "acid" = 100)
@@ -175,12 +175,12 @@ GLOBAL_LIST_EMPTY(PDAs)
 		return attack_self(M)
 	return ..()
 
-/obj/item/pda/attack_self(mob/user)
+/obj/item/pda/interact(mob/user)
 	if(!user.IsAdvancedToolUser())
 		to_chat(user, "<span class='warning'>You don't have the dexterity to do this!</span>")
 		return
 
-	. = ..()
+	..()
 
 	var/datum/asset/spritesheet/assets = get_asset_datum(/datum/asset/spritesheet/simple/pda)
 	assets.send(user)
@@ -519,16 +519,11 @@ GLOBAL_LIST_EMPTY(PDAs)
 			if("Ringtone")
 				var/t = input(U, "Please enter new ringtone", name, ttone) as text
 				if(in_range(src, U) && loc == U && t)
-					GET_COMPONENT(hidden_uplink, /datum/component/uplink)
-					if(hidden_uplink && (trim(lowertext(t)) == trim(lowertext(lock_code))))
-						hidden_uplink.locked = FALSE
-						hidden_uplink.interact(U)
-						to_chat(U, "The PDA softly beeps.")
+					if(SEND_SIGNAL(src, COMSIG_PDA_CHANGE_RINGTONE, U, t) & COMPONENT_STOP_RINGTONE_CHANGE)
 						U << browse(null, "window=pda")
-						src.mode = 0
+						return
 					else
-						t = copytext(sanitize(t), 1, 20)
-						ttone = t
+						ttone = copytext(sanitize(t), 1, 20)
 				else
 					U << browse(null, "window=pda")
 					return

code/game/objects/items/devices/PDA/cart.dm

@@ -549,7 +549,7 @@ Code:
 /obj/item/cartridge/Topic(href, href_list)
 	..()
 
-	if (!usr.canmove || usr.stat || usr.restrained() || !in_range(loc, usr))
+	if(!usr.canUseTopic(src, !issilicon(usr)))
 		usr.unset_machine()
 		usr << browse(null, "window=pda")
 		return