[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] serajr:
Bro... Inside PhoneStatusBar.smali has a method (below) that sets all volume sliders, and you need to change red values to yours (as our friend SpaceCaker explained... Thanks bro!!!!) :

.method private setVolumeSliders()V
.locals 12

.prologue
const/4 v11, 0x3

const/4 v10, 0x2

const/4 v9, 0x0

const/4 v7, 0x1

.line 54
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mContext:Landroid/content/Context;

const-string v6, "audio"

invoke-virtual {v5, v6}, Landroid/content/Context;->getSystemService(Ljava/lang/String;)Ljava/lang/Object;

move-result-object v5

check-cast v5, Landroid/media/AudioManager;

iput-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

.line 57
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mExpandedView:Lcom/android/systemui/statusbar/phone/ExpandedView;

const v8, [COLOR="red"]0x7f0e00a8[/COLOR]

invoke-virtual {v5, v8}, Lcom/android/systemui/statusbar/phone/ExpandedView;->findViewById(I)Landroid/view/View;

move-result-object v3

check-cast v3, Landroid/widget/SeekBar;

.line 58
.local v3, ringSlider:Landroid/widget/SeekBar;
invoke-virtual {v3, v7}, Landroid/widget/SeekBar;->setKeyProgressIncrement(I)V

.line 59
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v10}, Landroid/media/AudioManager;->getStreamMaxVolume(I)I

move-result v5

invoke-virtual {v3, v5}, Landroid/widget/SeekBar;->setMax(I)V

.line 60
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v10}, Landroid/media/AudioManager;->getStreamVolume(I)I

move-result v5

invoke-virtual {v3, v5}, Landroid/widget/SeekBar;->setProgress(I)V

.line 61
new-instance v5, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$15;

invoke-direct {v5, p0}, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$15;-><init>(Lcom/android/systemui/statusbar/phone/PhoneStatusBar;)V

invoke-virtual {v3, v5}, Landroid/widget/SeekBar;->setOnSeekBarChangeListener(Landroid/widget/SeekBar$OnSeekBarChangeListener;)V

.line 80
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mExpandedView:Lcom/android/systemui/statusbar/phone/ExpandedView;

const v8, [COLOR="red"]0x7f0e00a9[/COLOR]

invoke-virtual {v5, v8}, Lcom/android/systemui/statusbar/phone/ExpandedView;->findViewById(I)Landroid/view/View;

move-result-object v2

check-cast v2, Landroid/widget/SeekBar;

.line 81
.local v2, notificationSlider:Landroid/widget/SeekBar;
invoke-virtual {v2, v7}, Landroid/widget/SeekBar;->setKeyProgressIncrement(I)V

.line 82
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

const/4 v6, 0x5

invoke-virtual {v5, v6}, Landroid/media/AudioManager;->getStreamMaxVolume(I)I

move-result v5

invoke-virtual {v2, v5}, Landroid/widget/SeekBar;->setMax(I)V

.line 83
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

const/4 v6, 0x5

invoke-virtual {v5, v6}, Landroid/media/AudioManager;->getStreamVolume(I)I

move-result v5

invoke-virtual {v2, v5}, Landroid/widget/SeekBar;->setProgress(I)V

.line 84
new-instance v5, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$16;

invoke-direct {v5, p0}, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$16;-><init>(Lcom/android/systemui/statusbar/phone/PhoneStatusBar;)V

invoke-virtual {v2, v5}, Landroid/widget/SeekBar;->setOnSeekBarChangeListener(Landroid/widget/SeekBar$OnSeekBarChangeListener;)V

.line 103
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mExpandedView:Lcom/android/systemui/statusbar/phone/ExpandedView;

const v8, [COLOR="red"]0x7f0e00aa[/COLOR]

invoke-virtual {v5, v8}, Landroid/view/View;->findViewById(I)Landroid/view/View;

move-result-object v4

check-cast v4, Landroid/widget/SeekBar;

.line 104
.local v4, voiceCallSlider:Landroid/widget/SeekBar;
invoke-virtual {v4, v7}, Landroid/widget/SeekBar;->setKeyProgressIncrement(I)V

.line 105
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v9}, Landroid/media/AudioManager;->getStreamMaxVolume(I)I

move-result v5

invoke-virtual {v4, v5}, Landroid/widget/SeekBar;->setMax(I)V

.line 106
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v9}, Landroid/media/AudioManager;->getStreamVolume(I)I

move-result v5

invoke-virtual {v4, v5}, Landroid/widget/SeekBar;->setProgress(I)V

.line 107
new-instance v5, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$17;

invoke-direct {v5, p0}, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$17;-><init>(Lcom/android/systemui/statusbar/phone/PhoneStatusBar;)V

invoke-virtual {v4, v5}, Landroid/widget/SeekBar;->setOnSeekBarChangeListener(Landroid/widget/SeekBar$OnSeekBarChangeListener;)V

.line 126
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mExpandedView:Lcom/android/systemui/statusbar/phone/ExpandedView;

const v8, [COLOR="red"]0x7f0e00ab[/COLOR]

invoke-virtual {v5, v8}, Lcom/android/systemui/statusbar/phone/ExpandedView;->findViewById(I)Landroid/view/View;

move-result-object v1

check-cast v1, Landroid/widget/SeekBar;

.line 127
.local v1, mediaSlider:Landroid/widget/SeekBar;
invoke-virtual {v1, v7}, Landroid/widget/SeekBar;->setKeyProgressIncrement(I)V

.line 128
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v11}, Landroid/media/AudioManager;->getStreamMaxVolume(I)I

move-result v5

invoke-virtual {v1, v5}, Landroid/widget/SeekBar;->setMax(I)V

.line 129
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

invoke-virtual {v5, v11}, Landroid/media/AudioManager;->getStreamVolume(I)I

move-result v5

invoke-virtual {v1, v5}, Landroid/widget/SeekBar;->setProgress(I)V

.line 130
new-instance v5, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$18;

invoke-direct {v5, p0}, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$18;-><init>(Lcom/android/systemui/statusbar/phone/PhoneStatusBar;)V

invoke-virtual {v1, v5}, Landroid/widget/SeekBar;->setOnSeekBarChangeListener(Landroid/widget/SeekBar$OnSeekBarChangeListener;)V

.line 149
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mExpandedView:Lcom/android/systemui/statusbar/phone/ExpandedView;

const v8, [COLOR="red"]0x7f0e00ac[/COLOR]

invoke-virtual {v5, v8}, Lcom/android/systemui/statusbar/phone/ExpandedView;->findViewById(I)Landroid/view/View;

move-result-object v0

check-cast v0, Landroid/widget/SeekBar;

.line 150
.local v0, alarmSlider:Landroid/widget/SeekBar;
invoke-virtual {v0, v7}, Landroid/widget/SeekBar;->setKeyProgressIncrement(I)V

.line 151
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

const/4 v6, 0x4

invoke-virtual {v5, v6}, Landroid/media/AudioManager;->getStreamMaxVolume(I)I

move-result v5

invoke-virtual {v0, v5}, Landroid/widget/SeekBar;->setMax(I)V

.line 152
iget-object v5, p0, Lcom/android/systemui/statusbar/phone/PhoneStatusBar;->mAudioManager:Landroid/media/AudioManager;

const/4 v6, 0x4

invoke-virtual {v5, v6}, Landroid/media/AudioManager;->getStreamVolume(I)I

move-result v5

invoke-virtual {v0, v5}, Landroid/widget/SeekBar;->setProgress(I)V

.line 153
new-instance v5, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$19;

invoke-direct {v5, p0}, Lcom/android/systemui/statusbar/phone/PhoneStatusBar$19;-><init>(Lcom/android/systemui/statusbar/phone/PhoneStatusBar;)V

invoke-virtual {v0, v5}, Landroid/widget/SeekBar;->setOnSeekBarChangeListener(Landroid/widget/SeekBar$OnSeekBarChangeListener;)V

.line 170
return-void
.end method