[Android Head-Units] Cimation:
Hello Garry, thanks again for your help.

I found this:

In the EventService.smali file, there is indeed the InitSoundValue procedure.

It can be found in 2 places:

First place :

.method static synthetic access$7900(Lcom/szchoiceway/eventcenter/EventService;)V

.locals 0

.param p0, "x0" # Lcom/szchoiceway/eventcenter/EventService;

.prologue

.line 97

invoke-direct {p0}, Lcom/szchoiceway/eventcenter/EventService;->initSoundValue()V

return-void

.end method

Second place: (sorry in advance, that's a lot of text, I don't know if I'm allowed to do that here... my apologies):

.method private initSoundValue()V

.locals 4

.prologue

const/4 v1, 0x7

const/4 v0, 0x0

.line 7477

iput v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mBassVal:I

.line 7478

iput v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mMidVal:I

.line 7479

iput v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mTreVal:I

.line 7480

iput v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mEQMode:I

.line 7481

iput-boolean v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mLoundness:Z

.line 7482

iput v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mBassValFre:I

.line 7483

iput v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mMidValFre:I

.line 7484

iput v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mTreValFre:I

.line 7485

const/16 v0, 0xa

iput v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSWVal:I

.line 7486

iput v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mBALVal:I

.line 7487

iput v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mFADVal:I

.line 7489

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Bass_Val"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mBassVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7490

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Middle_Val"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mMidVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7491

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Treble_Val"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mTreVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7492

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Eq_Mode"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mEQMode:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7493

iget-object v1, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v2, "Set_Loudness"

iget-boolean v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mLoundness:Z

if-eqz v0, :cond_0

const-string v0, "1"

:goto_0

invoke-virtual {v1, v2, v0}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7494

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Bass_Freq"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mBassValFre:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7495

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Middle_Freq"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mMidValFre:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7496

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Treble_Freq"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mTreValFre:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7497

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_Subwoofer"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mSWVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7498

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_BalanaceLR"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mBALVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7499

iget-object v0, p0, Lcom/szchoiceway/eventcenter/EventService;->mSysProviderOpt:Lcom/szchoiceway/eventcenter/SysProviderOpt;

const-string v1, "Set_BalanaceFA"

new-instance v2, Ljava/lang/StringBuilder;

invoke-direct {v2}, Ljava/lang/StringBuilder;-><init>()V

const-string v3, ""

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v2

iget v3, p0, Lcom/szchoiceway/eventcenter/EventService;->mFADVal:I

invoke-virtual {v2, v3}, Ljava/lang/StringBuilder;->append(I)Ljava/lang/StringBuilder;

move-result-object v2

invoke-virtual {v2}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v2

invoke-virtual {v0, v1, v2}, Lcom/szchoiceway/eventcenter/SysProviderOpt;->updateRecord(Ljava/lang/String;Ljava/lang/String;)V

.line 7500

return-void

.line 7493

:cond_0

const-string v0, "0"

goto/16 :goto_0

.end method

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Is this file that should be modified before recompiling?